The Big Bang Theory
The Big Bang Theory

The Big Bang Theory

2007 - 2014, Comedy
Comedy about a group of friends who understand more about the laws of physics than they do about interacting with other people. Johnny Galecki, Simon Helberg and Kaley Cuoco star
Average rating:

Episode Guide

  • The Big Bang Theory - The Clean Room Infiltration (Season 8 Episode 11)
    Season 8 Episode 11:

    The Clean Room Infiltration

    Leonard and Wolowitz clash over a work emergency; Amy throws a Victorian Christmas party which Sheldon resents.

  • The Big Bang Theory - The Champagne Reflection (Season 8 Episode 10)
    Season 8 Episode 10:

    The Champagne Reflection

    Sheldon says goodbye to Fun With Flags; Howard, Leonard and Raj look through their dead professor's research; Bernadette learns her co-workers' true feelings.

  • The Big Bang Theory - The Septum Deviation (Season 8 Episode 9)
    Season 8 Episode 9:

    The Septum Deviation

    Sheldon panics when Leonard announces he has to go into hospital for surgery, while Raj discovers his parents have divorced. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Prom Equivalency (Season 8 Episode 8)
    Season 8 Episode 8:

    The Prom Equivalency

    The gang recreates a prom night on the roof of the apartment building when the girls decide they would like to re-enact their evenings with their current partners. However, Sheldon feels under pressure to take part in all the romantic traditions, and Howard worries about who Stuart will bring as his date. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Misinterpretation Agitation (Season 8 Episode 7)
    Season 8 Episode 7:

    The Misinterpretation Agitation

    Penny is left in a difficult professional situation when a doctor (guest star Billy Bob Thornton) turns up at her door following her flirtatious sales technique, so the guys try to help her out. Meanwhile, Amy and Bernadette have a dispute over whether female scientists should flaunt their sexuality to try to get ahead at work. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Expedition Approximation (Season 8 Episode 6)
    Season 8 Episode 6:

    The Expedition Approximation

    Leonard and Penny ask Howard and Bernadette for advice when they argue about money. Meanwhile, Sheldon and Raj try to find out whether they could survive a dark matter research expedition in a salt mine by attempting to simulate the conditions in a steam tunnel beneath the university. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Focus Attenuation (Season 8 Episode 5)
    Season 8 Episode 5:

    The Focus Attenuation

    Penny is forced to revise for a work assessment during the girls' trip to Las Vegas, and Amy and Bernadette accuse her of spoiling their fun. Meanwhile, the guys try to invent something of scientific importance - but only come up with new ways to procrastinate. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Hook-Up Reverberation (Season 8 Episode 4)
    Season 8 Episode 4:

    The Hook-Up Reverberation

    Raj's girlfriend Emily (Laura Spencer) gives Penny the cold shoulder when she learns about his past. Meanwhile, the guys debate investing in Stuart's comic-book shop and becoming part owners of the business. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Tomorrow at 8:00pm EST - WCBS (CBS)

  • The Big Bang Theory - The First Pitch Insufficiency (Season 8 Episode 3)
    Season 8 Episode 3:

    The First Pitch Insufficiency

    Leonard and Penny attempt to prove Sheldon wrong when he claims that he and Amy have a superior relationship. Meanwhile, Howard is nervous when Nasa asks him to throw the first pitch at a baseball game honouring National Space Day. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Junior Professor Solution (Season 8 Episode 2)
    Season 8 Episode 2:

    The Junior Professor Solution

    Sheldon is forced to teach a course at the university, and Howard surprises the gang when he decides to enrol on it. Meanwhile, Amy plays Penny and Bernadette off against each other while the tension brews over Penny's new job. Comedy, guest starring Regina King, with Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Locomotion Interruption (Season 8 Episode 1)
    Season 8 Episode 1:

    The Locomotion Interruption

    The comedy returns as Leonard and Amy are forced to take an unexpected road trip to Arizona to pick up Sheldon after his epic railway journey ends in chaos. Meanwhile, Howard finds Stuart's relationship with his mother strange, and Penny has an interview for a sales job at Bernadette's work place. Starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Status Quo Combustion (Season 7 Episode 24)
    Season 7 Episode 24:

    The Status Quo Combustion

    In the seventh series finale, Sheldon becomes upset about his career, the destruction of the comic-book store and Leonard and Penny's future living arrangements. Elsewhere, Howard is unable to keep hold of a carer for his mother. Comedy, staring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Wednesday 31st December 10:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Gorilla Dissolution (Season 7 Episode 23)
    Season 7 Episode 23:

    The Gorilla Dissolution

    Penny gets fired from the movie, prompting her to takes a serious look at her life. Elsewhere, Raj gets advice from Sheldon after he sees Emily on a date with another man at the cinema, while Howard's mother breaks her leg. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Wednesday 31st December 9:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Proton Transmogrification (Season 7 Episode 22)
    Season 7 Episode 22:

    The Proton Transmogrification

    The gang's preparations for Star Wars Day are interrupted by the news that Professor Proton has died. Leonard and Penny attend the funeral, where they talk about their rejected marriage proposals, but Sheldon has difficulty dealing with the death of his childhood hero - until a surprise visitor helps him cope with his grief. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco, with a guest appearance by Bob Newhart

    Wednesday 31st December 9:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Anything Can Happen Recurrence (Season 7 Episode 21)
    Season 7 Episode 21:

    The Anything Can Happen Recurrence

    Penny and Leonard try to distract Sheldon from his career woes by reinstating Anything Can Happen Thursday, but it causes friction among the gang when Amy and Bernadette are caught lying. Meanwhile, Raj seeks Howard's help in preparing for a date with Emily. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Wednesday 31st December 8:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Relationship Diremption (Season 7 Episode 20)
    Season 7 Episode 20:

    The Relationship Diremption

    Penny tries to help Sheldon when he starts to wonder whether he is wasting his time studying string theory. Meanwhile, during a dinner, Raj discovers Howard once embarrassed himself on a date with Emily. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Tuesday 30th December 10:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Indecision Amalgamation (Season 7 Episode 19)
    Season 7 Episode 19:

    The Indecision Amalgamation

    Raj is racked with guilt when he tries to date Lucy and Emily at the same time, Penny has trouble deciding whether to take a role in a film, and Sheldon struggles to choose between two gaming systems. Comedy, starring Kunal Nayyar, Jim Parsons and Kale Cuoco-Sweeting

    Tuesday 30th December 9:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Mummy Observation (Season 7 Episode 18)
    Season 7 Episode 18:

    The Mummy Observation

    Sheldon is forced to confront a new reality when he visits his mother in Houston, while Raj's murder mystery party causes conflict for the rest of the gang members. Comedy, starring. Johnny Galecki, Jim Parsons and Kaley Cuoco

    Tuesday 30th December 9:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Friendship Turbulence (Season 7 Episode 17)
    Season 7 Episode 17:

    The Friendship Turbulence

    After arguing with Sheldon, Howard tries to make amends by taking him to Nasa's headquarters in Houston. Elsewhere, Penny has second thoughts about quitting her job as a waitress when her car dies, while Amy tries to find Raj a date. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Tuesday 30th December 8:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Table Polarization (Season 7 Episode 16)
    Season 7 Episode 16:

    The Table Polarization

    Leonard's purchase of a dining-room table causes Sheldon to re-evaluate his life. Meanwhile, Howard is offered the chance to go back to the International Space Station, and Bernadette struggles to decide whether to encourage him. Comedy, starring Johnny Galecki, Jim Parsons and Melissa Rauch

    Tuesday 30th December 8:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Locomotive Manipulation (Season 7 Episode 15)
    Season 7 Episode 15:

    E4's Top 20 - The Big Bang Theory: The Locomotive Manipulation

    Sheldon and Amy take a train ride to Napa Valley with Howard and Bernadette on Valentine's Day. Comedy about four friends who understand more about the laws of physics than they do about interacting with other people, including a free-spirited woman called Penny. Johnny Galecki, Jim Parsons and Kaley Cuoco star

    Thursday 1st January 8:00pm EST - WCBS (CBS)

  • The Big Bang Theory - The Convention Conundrum (Season 7 Episode 14)
    Season 7 Episode 14:

    The Convention Conundrum

    When the guys are unable to get tickets for the Comic-Con, Leonard, Howard and Raj decide to buy fake passes from a stranger - but they then worry about getting caught with them. Sheldon decides to hold his own comic-book convention and searches for a suitable star guest for the event. Meanwhile, the girls take tea at a hotel but discover that maturity is over-rated. Comedy, guest starring James Earl Jones and Carrie Fisher

    Monday 29th December 10:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Occupation Recalibration (Season 7 Episode 13)
    Season 7 Episode 13:

    The Occupation Recalibration

    Sheldon tries to relax after he is forced to take a vacation, while Penny quits her job, and Leonard struggles to be supportive of her. Elsewhere, Bernadette seeks Stuart's help in replacing one of Howard's comic books. Comedy about four friends who understand more about the laws of physics than they do about interacting with other people, including a free-spirited woman called Penny. Johnny Galecki, Jim Parsons and Kaley Cuoco star

    Monday 29th December 10:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Hesitation Ramification (Season 7 Episode 12)
    Season 7 Episode 12:

    The Hesitation Ramification

    Penny makes an important decision after Leonard tries to help her in the aftermath of a failed role on a TV show. Comedy about four friends who understand more about the laws of physics than they do about interacting with other people, including a free-spirited woman called Penny. Starring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Saturday 27th December 10:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Cooper Extraction (Season 7 Episode 11)
    Season 7 Episode 11:

    The Cooper Extraction

    While Sheldon is at home in Texas, the rest of the gang decorate for Christmas and reflect on how much he has changed their lives. Comedy about four friends who understand more about the laws of physics than they do about interacting with other people, including a free-spirited woman called Penny. Johnny Galecki, Jim Parsons and Kaley Cuoco star

    Thursday 25th December 8:00pm EST - WCBS (CBS)

  • The Big Bang Theory - The Discovery Dissipation (Season 7 Episode 10)
    Season 7 Episode 10:

    The Discovery Dissipation

    Sheldon is bothered by the attention he receives in the wake of his heavy element discovery, but is taken aback when his work is disproved by Leonard. Meanwhile, Raj makes Howard and Bernadette feel inadequate when he stays with them for a week and is the perfect house guest

    Saturday 27th December 10:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Thanksgiving Decoupling (Season 7 Episode 9)
    Season 7 Episode 9:

    E4's Top 20 - The Big Bang Theory: The Thanksgiving Decoupling

    Sheldon is dismayed when the group spends the Thanksgiving holiday at Mrs Wolowitz's house, but hits it off with Bernadette's father. Meanwhile, Penny realises she must deal with a mistake from her past when she and Leonard have an argument. Comedy, starring Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - The Itchy Brain Simulation (Season 7 Episode 8)
    Season 7 Episode 8:

    The Itchy Brain Simulation

    Leonard attempts to stop Sheldon from overreacting to a mistake, forcing Sheldon to make Leonard experience first hand what it's like to be him. Comedy about four friends who understand more about the laws of physics than they do about interacting with other people, including a free-spirited woman called Penny. Johnny Galecki, Jim Parsons and Kaley Cuoco star

    Saturday 27th December 9:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Proton Displacement (Season 7 Episode 7)
    Season 7 Episode 7:

    The Proton Displacement

    Sheldon is hurt when Professor Proton (Bob Newhart) contacts Leonard for help, so he befriends TV scientist Bill Nye, and Raj gets jealous when Howard crashes a girls' night in making home-made jewellery. Starring Jim Parsons, Johnny Galecki, and Kunal Nayyar

    Saturday 27th December 9:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Romance Resonance (Season 7 Episode 6)
    Season 7 Episode 6:

    The Romance Resonance

    Sheldon stumbles upon a major scientific breakthrough, causing him to feel like a fraud, while Penny steps up her game with Leonard after seeing Howard make a romantic gesture to Bernardette. Comedy, starring Jim Parsons, Johnny Galecki and Kaley Cuoco

  • The Big Bang Theory - The Workplace Proximity (Season 7 Episode 5)
    Season 7 Episode 5:

    The Workplace Proximity

    Sheldon re-evaluates the time he spends with Amy when she takes a job at the university. Meanwhile, Howard is forced to sleep on his friend's sofa after he gets into an argument with Bernadette. Comedy, starring Jim Parsons, Simon Helberg and Mayim Bialik

    Saturday 27th December 8:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Raiders Minimisation (Season 7 Episode 4)
    Season 7 Episode 4:

    The Raiders Minimisation

    Sheldon introduces Amy to Raiders of the Lost Ark - one of his favourite films - and is distraught when she ends up pointing out a plot hole that ruins the whole story. Meanwhile, Leonard realises he can manipulate Penny into feeling sorry for him when his mother publishes a reveal-all book about his childhood problems. Comedy, starring Jim Parsons and Johnny Galecki

    Saturday 27th December 8:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Scavenger Vortex (Season 7 Episode 3)
    Season 7 Episode 3:

    E4's Top 20 - The Big Bang Theory: The Scavenger Vortex

    The friends compete in a scavenger hunt designed by Raj to test their scientific knowledge and life skills, but the game brings out the best and worst in everyone. As the hunt progresses, Howard and Amy begin to bond over their shared musical tastes, while Penny and Sheldon work together as a team and Bernadette becomes fiercely competitive

    Friday 26th December 9:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Deception Verification (Season 7 Episode 2)
    Season 7 Episode 2:

    The Deception Verification

    Leonard returns from his research expedition in the North Sea early and undergoes an adjustment period with Sheldon. Howard experiences an unusual emotional reaction as a result of his relationship with his mother. Johnny Galecki, Jim Parsons and Simon Helberg star

    Friday 26th December 9:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Hofstadter Insufficiency (Season 7 Episode 1)
    Season 7 Episode 1:

    The Hofstadter Insufficiency

    Sheldon and Penny bond as they miss Leonard, and Howard tries to help Raj get over his break-up with Lucy. Meanwhile, Bernadette and Amy visit an out-of-town conference where they are hit on at a hotel bar. Comedy about four high-achieving scientists, starring Jim Parsons, Kaley Cuoco and Johnny Galecki

    Friday 26th December 8:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Bon Voyage Reaction (Season 6 Episode 24)
    Season 6 Episode 24:

    The Bon Voyage Reaction

    Leonard is offered an exciting job opportunity, but it will mean he has to leave the country for several months. Penny tries to support his ambitions, while Sheldon is jealous and attempts to discourage him from accepting the post. Meanwhile, Raj pushes the boundaries with Lucy, but puts their relationship in jeopardy

    Friday 26th December 8:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Love Spell Potential (Season 6 Episode 23)
    Season 6 Episode 23:

    E4's Top 20 - The Big Bang Theory: The Love Spell Potential

    The guys invite the girls to a Dungeons & Dragons night when their trip to Vegas falls through after an incident with airport security. However, following a few drinks, Sheldon and Amy's relationship takes an unexpected turn. Meanwhile, Raj goes on a date with Lucy, who tries to sneak out of the restaurant's bathroom window - but ends up getting stuck and calling for his help

    Thursday 25th December 10:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Proton Resurgence (Season 6 Episode 22)
    Season 6 Episode 22:

    The Proton Resurgence

    Leonard and Sheldon discover their favourite childhood TV science show host Professor Proton can be booked for private parties and decide to hire him to entertain them. Meanwhile, Raj asks Howard and Bernadette to look after his dog for the weekend, but the couple panic when the canine goes missing. Guest starring Bob Newhart

    Thursday 25th December 10:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Closure Alternative (Season 6 Episode 21)
    Season 6 Episode 21:

    The Closure Alternative

    Amy tries to help Sheldon get over his desire for closure when one of his favourite TV shows is cancelled on a cliffhanger ending. Meanwhile, Raj discovers his new girlfriend Lucy has a blog in which she has written about him, but he is upset when he learns she believes he has feminine qualities, causing him to worry about their relationship

    Thursday 25th December 9:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Tenure Turbulence (Season 6 Episode 20)
    Season 6 Episode 20:

    The Tenure Turbulence

    The guys compete for a tenured professor position at the university, leading them to try to win over the committee in charge of appointing a new staff member, and arguing about who deserves the spot the most. However, the panel includes Mrs Davis from Human Resources, whom Sheldon has crossed paths with before. Guest starring Regina King

    Thursday 25th December 9:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Closet Reconfiguration (Season 6 Episode 19)
    Season 6 Episode 19:

    The Closet Reconfiguration

    Bernadette and Howard host a dinner party, but as it falls on Sheldon's Thai food night, he opts to bring his own dinner. As punishment for his lack of manners, the gang decides he should organise Wolowitz's cluttered wardrobe, but he discovers an unopened letter from Howard's father, who hasn't made contact in years

    Tuesday 23rd December 10:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Contractual Obligation Implementation (Season 6 Episode 18)
    Season 6 Episode 18:

    The Contractual Obligation Implementation

    While the girls go to Disneyland and get made up as princesses, the guys have to promote science as a career option for women at Howard's old middle school. Meanwhile, Raj and Lucy have their first date in a library, where instead of speaking to each other they send text messages

    Tuesday 23rd December 9:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Monster Isolation (Season 6 Episode 17)
    Season 6 Episode 17:

    The Monster Isolation

    Raj is upset when Lucy runs away in the middle of their date, leaving the gang to cheer him up. However, when Howard bumps into her she admits how shy she actually is and rearranges another outing with Raj. Meanwhile, Sheldon asks Penny to help with a new episode of Fun with Flags, and because he is impressed by her acting ability, the friends go to see her in a performance of A Streetcar Named Desire

    Tuesday 23rd December 9:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Tangible Affection Proof (Season 6 Episode 16)
    Season 6 Episode 16:

    The Tangible Affection Proof

    Leonard and Penny celebrate Valentine's Day, but their evening takes a turn for the worse when the latter's ex-boyfriend proposes to his girlfriend in the same restaurant. Meanwhile, Sheldon enlists the help of his assistant Alex to find the perfect gift for Amy

    Tuesday 23rd December 8:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Spoiler Alert Segmentation (Season 6 Episode 15)
    Season 6 Episode 15:

    The Spoiler Alert Segmentation

    Leonard moves in with Penny while he is mad at Sheldon. However, this leads Amy to suggest she would be the perfect roommate for Dr Cooper as she knows him so well and he wouldn't have to train anyone else. Meanwhile, Howard goes on a trip to Las Vegas with Bernadette and asks Raj to keep an eye on his mother while he is away

    Tuesday 23rd December 8:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Cooper/Kripke Inversion (Season 6 Episode 14)
    Season 6 Episode 14:

    The Cooper/Kripke Inversion

    Sheldon is furious when the university forces him to work with Kripke, while Howard's hobby lands him in financial trouble. However, that doesn't stop him and Raj getting expensive action figures of themselves made - much to Bernadette's disapproval

    Tomorrow at 10:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Bakersfield Expedition (Season 6 Episode 13)
    Season 6 Episode 13:

    The Bakersfield Expedition

    The guys become stranded in the middle of nowhere when Leonard's car is stolen en route to the Bakersfield comic-book convention. Meanwhile, back at home, the women try to work out why the guys are so fascinated with comic books

    Tomorrow at 10:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Egg Salad Equivalency (Season 6 Episode 12)
    Season 6 Episode 12:

    The Egg Salad Equivalency

    Leonard is surprised when he realises Alex is attracted to him - but Sheldon is annoyed that his new assistant is not focusing on her work and attempts to get advice from the girls about what to do. However, the situation upsets Penny. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - The Santa Simulation (Season 6 Episode 11)
    Season 6 Episode 11:

    The Santa Simulation

    Leonard tries to get Sheldon into the Christmas mood by playing a game, but things do not go as planned when Sheldon reveals a childhood trauma. Raj goes out with the girls and reveals he had crushes on both Penny and Bernadette - but not Amy. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Wednesday 24th December 11:00pm EST - WNYW (FOX)

  • The Big Bang Theory - The Fish Guts Displacement (Season 6 Episode 10)
    Season 6 Episode 10:

    The Fish Guts Displacement

    As part of the relationship agreement, Sheldon reluctantly has to take care of Amy when she gets sick, but she loves the extra attention so much she pretends to remain in poor health. Elsewhere, Howard tries to get some tips on fishing from Penny when he and Bernadette go to visit her manly father

  • The Big Bang Theory - The Parking Spot Escalation (Season 6 Episode 9)
    Season 6 Episode 9:

    The Parking Spot Escalation

    Sheldon feels undermined when his parking space at the university is allocated to Howard instead, and his determination to cling on to the spot causes a rift in the pair's friendship. However, the battle between the boys pales in comparison to that waged by Amy and Bernadette, whose disagreement on behalf of their significant others becomes increasingly personal. Comedy, starring Jim Parsons and Simon Helberg

  • The Big Bang Theory - The 43 Peculiarity (Season 6 Episode 8)
    Season 6 Episode 8:

    The 43 Peculiarity

    The friends try to solve the mystery of Sheldon's post-lunch activities, following him to a secret room where they discover how he chills out. Elsewhere, Leonard is jealous when Penny starts texting a classmate, but things quickly change when Alex gets flirty with him

  • The Big Bang Theory - The Habitation Configuration (Season 6 Episode 7)
    Season 6 Episode 7:

    The Habitation Configuration

    When Amy and Wil Wheaton get into a fight while filming Fun with Flags, Sheldon pays the consequences of their fall out. He ends up going to Penny for advice and gets drunk, prompting him to confront the actor in a bid to make him apologise. Bernadette encourages Howard to move out of his mother's house

  • The Big Bang Theory - The Extract Obliteration (Season 6 Episode 6)
    Season 6 Episode 6:

    The Extract Obliteration

    Sheldon upsets guest star Stephen Hawking when they play an online game of Words with Friends, until Howard advises him to let the scientist win. Elsewhere, Penny enrols in a college class, but decides to keep it a secret from Leonard. Comedy, starring Jim Parsons and Simon Helberg

  • The Big Bang Theory - Geekiest Guest Stars: The Holographic Excitation (Season 6 Episode 5)
    Season 6 Episode 5:

    Geekiest Guest Stars: The Holographic Excitation

    Stuart and Raj host a Halloween party at the comic-book store, and Howard talks incessantly about his work on board the International Space Station, annoying his wife and friends. Penny and Sheldon have a steamy encounter at the lab. Comedy, guest starring Buzz Aldrin, with Johnny Galecki, Jim Parsons and Kaley Cuoco

    Thursday 1st January 11:00pm EST - WNYW (FOX)

  • The Big Bang Theory - The Re-Entry Minimization (Season 6 Episode 4)
    Season 6 Episode 4:

    The Re-Entry Minimization

    Howard returns from his space mission, but the welcome from his friends and family does not meet his expectations. His night alone with Bernadette goes badly, his mother ignores him, and he realises Stuart has taken his place as Koothrappali's best friend. On top of that, Sheldon, Amy, Leonard and Penny kick him out of their group game night. Comedy, starring Simon Helberg

    Thursday 1st January 12:30am EST - WNYW (FOX)

  • The Big Bang Theory - The Higgs Boson Observation (Season 6 Episode 3)
    Season 6 Episode 3:

    The Higgs Boson Observation

    Sheldon hires an attractive female assistant, but when she becomes interested in Leonard, Penny decides to mark her territory by sleeping with him. Meanwhile, Howard starts to lose his mind when his return from space is delayed another week. Comedy, starring Jim Parsons

    Tuesday 30th December 11:00pm EST - WNYW (FOX)

  • The Big Bang Theory - The Decoupling Fluctuation (Season 6 Episode 2)
    Season 6 Episode 2:

    The Decoupling Fluctuation

    Penny tells the girls she is unsure about her relationship with Leonard and is considering breaking up with him, but when Sheldon finds out, he tries his best to change her mind. Meanwhile, on the International Space Station, Howard is being bullied by the other astronauts. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

    Monday 29th December 11:00pm EST - WNYW (FOX)

  • The Big Bang Theory - The Date Night Variable (Season 6 Episode 1)
    Season 6 Episode 1:

    The Date Night Variable

    Despite being on the International Space Station, Howard gets caught in a strange argument between Bernadette and his mother via video link. Elsewhere, Raj feels lonely while his best friend is away and ends up interfering with Sheldon's and Leonard's dates. Comedy, starring Simon Helberg

    Friday 26th December 11:00pm EST - WNYW (FOX)

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Countdown Reflection (Season 5 Episode 24)
    Season 5 Episode 24:

    E4's Top 20 - The Big Bang Theory: The Countdown Reflection

    As Howard and his fellow astronauts sit in the space shuttle awaiting launch, he reflects on the tumultuous events of the previous few days, when he and Bernadette tried to get married before he went into space. Meanwhile, his friends witness the blast-off on TV at home

    Tuesday 23rd December 11:00pm EST - WNYW (FOX)

  • The Big Bang Theory - The Launch Acceleration (Season 5 Episode 23)
    Season 5 Episode 23:

    The Launch Acceleration

    Howard tries to use his wedding as an excuse to avoid being sent into space but ends up accepting the mission. Amy plots to get Sheldon to take the next step in their relationship, while Leonard accidentally asks Penny to marry him after she agrees to sleep with him again

    Tomorrow at 11:00pm EST - WNYW (FOX)

  • The Big Bang Theory - The Stag Convergence (Season 5 Episode 22)
    Season 5 Episode 22:

    The Stag Convergence

    Leonard, Sheldon and Raj organise a bachelor party for Howard, but stories about his sexual history are unwittingly revealed by Raj, and his friend has to persuade bride-to-be Bernadette not to call the wedding off. Comedy, starring Simon Helberg and Kunal Nayyar

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Hawking Excitation (Season 5 Episode 21)
    Season 5 Episode 21:

    E4's Top 20 - The Big Bang Theory: The Hawking Excitation

    Wolowitz is put in charge of looking after Stephen Hawking's wheelchair when the famous scientist comes to lecture at the university for a week. Sheldon is desperate to meet Hawking so Wolowitz takes advantage of his position of privilege to blackmail Sheldon into doing the most unpleasant tasks. Guest starring Stephen Hawking

  • The Big Bang Theory - Geekiest Guest Stars: The Transporter Malfunction (Season 5 Episode 20)
    Season 5 Episode 20:

    Geekiest Guest Stars: The Transporter Malfunction

    Penny buys Leonard and Sheldon some Star Trek action figures, but the duo refuse to remove them from the packaging in case their value is diminished. Elsewhere, Raj is desperate to find someone to accompany him to a wedding and asks his parents to find him a date. Featuring the guest voice of Leonard Nimoy (Star Trek)

  • The Big Bang Theory - The Weekend Vortex (Season 5 Episode 19)
    Season 5 Episode 19:

    The Weekend Vortex

    Amy is disappointed when Sheldon breaks his promise to go with her to her aunt's birthday party, and instead decides to join the boys for a Star Wars video game marathon lasting the entire weekend. Comedy, starring Mayim Bialik and Jim Parsons

  • The Big Bang Theory - Sheldon's Best Episodes: The Big Bang Theory: The Werewolf Transformation (Season 5 Episode 18)
    Season 5 Episode 18:

    Sheldon's Best Episodes: The Big Bang Theory: The Werewolf Transformation

    Sheldon refuses to get his hair cut after his regular barber passes away - a solitary change that causes chaos in the rest of his well-ordered life. Meanwhile, Howard undergoes a gruelling Nasa training programme in Houston, Texas, meaning he can only communicate with Bernadette via the internet

  • The Big Bang Theory - The Rothman Disintegration (Season 5 Episode 17)
    Season 5 Episode 17:

    The Rothman Disintegration

    Leonard, Raj and Howard devise a contest to decide whether Sheldon or Kripke should get Professor Rothman's vacant corner office. Meanwhile, Penny receives the gift of a painting from Amy to celebrate their friendship, but discreetly tries to dispose of it with help from Bernadette

  • The Big Bang Theory - The Vacation Solution (Season 5 Episode 16)
    Season 5 Episode 16:

    The Vacation Solution

    Sheldon uses his holidays to help Amy in her biology lab, and is soon moaning about the menial jobs he is given, until she asks him to dissect a brain. Penny grows curious about Leonard's feelings about marriage when Bernadette asks Howard to sign a pre-nuptial agreement

  • The Big Bang Theory - The Friendship Contraction (Season 5 Episode 15)
    Season 5 Episode 15:

    The Friendship Contraction

    After Sheldon keeps Leonard awake all night, Leonard decides to break the Roommate Agreement with Sheldon. Howard makes preparations to go on a flight to the International Space Station and enlists Raj's help to ensure he gets a cool astronaut nickname

  • The Big Bang Theory - Sheldon's Best Episodes: The Big Bang Theory: The Beta Test Initiation (Season 5 Episode 14)
    Season 5 Episode 14:

    Sheldon's Best Episodes: The Big Bang Theory: The Beta Test Initiation

    Leonard and Penny continue testing their rekindled relationship using an innovative system to report their discrepancies. Howard and Bernadette begin to worry when Raj starts treating his new phone like a person, while Sheldon and Amy try to achieve internet fame by creating a video podcast about flags

  • The Big Bang Theory - The Recombination Hypothesis (Season 5 Episode 13)
    Season 5 Episode 13:

    The Recombination Hypothesis

    Leonard asks Penny out on a date, and they agree to give their relationship another chance. They soon begin to remember why it did not work out in the first place, but end up sleeping together anyway. The 100th episode of the comedy, starring Johnny Galecki and Kaley Cuoco

  • The Big Bang Theory - The Shiny Trinket Maneuver (Season 5 Episode 12)
    Season 5 Episode 12:

    The Shiny Trinket Maneuver

    Sheldon is uninterested in Amy's career, so Penny, Raj and Leonard try to make him understand that sometimes it benefits a relationship to pretend to care about a partner's accomplishments. Howard notices Bernadette is uncomfortable around children when she helps him perform a magic show at his nephew's birthday party

  • The Big Bang Theory - The Speckerman Recurrence (Season 5 Episode 11)
    Season 5 Episode 11:

    The Speckerman Recurrence

    Leonard confronts the man who tormented him in high school, while Penny realises she did her fair share of bullying in the past and calls the people she targeted to apologise. Comedy, starring Johnny Galecki and Kaley Cuoco

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Flaming Spittoon Acquisition (Season 5 Episode 10)
    Season 5 Episode 10:

    E4's Top 20 - The Big Bang Theory: The Flaming Spittoon Acquisition

    Comic-book store owner Stuart asks Amy out on a date, forcing a jealous Sheldon to consider the future of his relationship with her. Meanwhile, the scientists become obsessed with an unusual new card game, and Penny organises a round of Twister. Comedy, starring Jim Parsons and Mayim Bialik

  • The Big Bang Theory - The Ornithophobia Diffusion (Season 5 Episode 9)
    Season 5 Episode 9:

    The Ornithophobia Diffusion

    Leonard and Penny endure an awkward night at the cinema, with both of them insisting the outing is not a date. Meanwhile, a terrified Sheldon enlists his friends' help when a bird flies into his apartment, but his behaviour soon leaves them exasperated. Comedy, starring Johnny Galecki, Kaley Cuoco and Jim Parsons

  • The Big Bang Theory - The Isolation Permutation (Season 5 Episode 8)
    Season 5 Episode 8:

    The Isolation Permutation

    Amy is hurt when she discovers Penny and Bernadette went shopping for bridesmaid dresses without. She first turns to a reluctant Sheldon for comfort and later tries to drown her sorrows Comedy, starring Mayim Balik and Katey Cuoco

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Good Guy Fluctuation (Season 5 Episode 7)
    Season 5 Episode 7:

    E4's Top 20 - The Big Bang Theory: The Good Guy Fluctuation

    Leonard has doubts about his feelings for Priya when he kisses a girl he meets in the comic-book store, while the rest of the gang members play pranks on Sheldon in celebration of Halloween. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - The Rhinitis Revelation (Season 5 Episode 6)
    Season 5 Episode 6:

    The Rhinitis Revelation

    Sheldon's mother comes to visit and woos the gang, but he cannot help feeling jealous of all the attention she is receiving - until a bout of illness lays him low, and he suddenly sees the benefits of having her around. Comedy, starring Jim Parsons

  • The Big Bang Theory - The Russian Rocket Reaction (Season 5 Episode 5)
    Season 5 Episode 5:

    The Russian Rocket Reaction

    Sheldon's old adversary Wil Wheaton returns and invites everyone to a housewarming party. Leonard is eager to go, but Sheldon threatens to shun him if he attends. However, he soon changes his mind when he finds out that Star Trek: The Next Generation actor Brent Spiner will also be there

  • The Big Bang Theory - The Wiggly Finger Catalyst (Season 5 Episode 4)
    Season 5 Episode 4:

    The Wiggly Finger Catalyst

    Raj feels upset about not being in a relationship, so Penny sets out to find a date and introduces him to a girl he can actually talk to. They hit it off, but when it becomes apparent he has been buying his new girlfriend large amounts of expensive gifts his friends become suspicious she is only interested in his wealth

  • The Big Bang Theory - The Pulled Groin Extrapolation (Season 5 Episode 3)
    Season 5 Episode 3:

    The Pulled Groin Extrapolation

    Leonard inadvertently gives the impression he is attracted to Amy when he goes as her date to her colleague's wedding. Meanwhile, Howard tries to persuade Bernadette they should live with his mother after getting married and suggests a trial run of the arrangement over the weekend

  • The Big Bang Theory - The Infestation Hypothesis (Season 5 Episode 2)
    Season 5 Episode 2:

    The Infestation Hypothesis

    Amy is caught in a battle of wills between Sheldon and Penny, while Leonard tries to reignite his long-distance relationship with Priya, who has moved back to India. Comedy, starring Johnny Galecki, Kaley Cuoco and Jim Parsons

  • The Big Bang Theory - The Skank Reflex Analysis (Season 5 Episode 1)
    Season 5 Episode 1:

    The Skank Reflex Analysis

    Penny worries about the consequences of spending the night with Raj, and Leonard's reaction confirms her worst fears. Meanwhile, Sheldon is more interested in the upcoming paintball competition, and tries to refocus the boys' attentions as they argue over the previous evening's activities. Comedy, starring Jim Parsons, Johnny Galecki and Kaley Cuoco

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Room-mate Transmogrification (Season 4 Episode 24)
    Season 4 Episode 24:

    E4's Top 20 - The Big Bang Theory: The Room-mate Transmogrification

    Bernadette receives her PhD, and the friends then tease Howard about being the only one among them who is not a doctor. Meanwhile, Raj becomes Sheldon's new flatmate after overhearing Leonard and Priya engaging in a Star Trek bedroom fantasy. Comedy, starring Johnny Galecki, Jim Parsons and Kunal Nayyar

  • The Big Bang Theory - The Engagement Reaction (Season 4 Episode 23)
    Season 4 Episode 23:

    The Engagement Reaction

    Howard decides to tell his mother that he and Bernadette are engaged - but she later collapses, making him fear the shock of the news has caused her to suffer a heart attack. As the gang convenes at the hospital, Sheldon's fear of infectious diseases lands him in trouble, while Priya and Penny bond over coffee

  • The Big Bang Theory - The Wildebeest Implementation (Season 4 Episode 22)
    Season 4 Episode 22:

    The Wildebeest Implementation

    Amy and Penny ask Bernadette to help them spy on Leonard and Priya after the couple invite her and Howard to dinner. An experimental drug helps Raj overcome his fear of talking to women, but the cure proves more effective than he had hoped. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - The Agreement Dissection (Season 4 Episode 21)
    Season 4 Episode 21:

    The Agreement Dissection

    Sheldon is infuriated when Priya uses her legal knowledge to find a loophole in the room-mate agreement - but his spirits are lifted by a night on the town with Amy, Penny and Bernadette. Comedy, starring Jim Parsons, Johnny Galecki and Kaley Cuoco

  • The Big Bang Theory - The Herb Garden Germination (Season 4 Episode 20)
    Season 4 Episode 20:

    The Herb Garden Germination

    Amy and Sheldon start a gossip experiment to see how quickly rumours spread among the gang, while Howard tells his friends that he is planning to propose to Bernadette - not realising Raj is wrestling with his own feelings for her. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Zarnecki Incursion (Season 4 Episode 19)
    Season 4 Episode 19:

    E4's Top 20 - The Big Bang Theory: The Zarnecki Incursion

    Sheldon is distraught when his online gaming account is hacked, so his friends decide to find out who is responsible. However, they make the disastrous mistake of confronting the culprit in person. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Prestidigitation Approximation (Season 4 Episode 18)
    Season 4 Episode 18:

    E4's Top 20 - The Big Bang Theory: The Prestidigitation Approximation

    Leonard faces the difficult decision of choosing between his relationship with Priya and his friendship with Penny. Meanwhile, Howard impresses his friends with a magic trick - and an exasperated Sheldon is determined to figure out how he did it. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - The Toast Derivation (Season 4 Episode 17)
    Season 4 Episode 17:

    The Toast Derivation

    Sheldon decides to make a new set of friends as he is depressed that the group's social world revolves around Leonard rather than himself. Meanwhile, Amy and Bernadette try to persuade Penny to go on a date. Comedy, guest starring LeVar Burton (Star Trek: The Next Generation), with Johnny Galecki, Jim Parsons and Mayim Bialik

  • The Big Bang Theory - The Cohabitation Formulation (Season 4 Episode 16)
    Season 4 Episode 16:

    The Cohabitation Formulation

    Wolowitz is torn between taking his relationship with Bernadette to the next level and pleasing his mother - and the solution he comes up with leaves everyone unsatisfied. Leonard rekindles his romance with Raj's sister Priya, while Amy uses Penny's emotions as the basis for a research project

  • The Big Bang Theory - The Benefactor Factor (Season 4 Episode 15)
    Season 4 Episode 15:

    The Benefactor Factor

    Leonard is forced to consider how far he is willing to push himself in the name of science when a wealthy benefactor makes an indecent proposal. Comedy, starring Johnny Galecki, with Jessica Walter (Arrested Development) and Joshua Malina (The West Wing)

  • The Big Bang Theory - The Thespian Catalyst (Season 4 Episode 14)
    Season 4 Episode 14:

    The Thespian Catalyst

    Sheldon agrees to participate in a series of short lectures at the university, but is worried the students dislike him. On Amy's guidance, he asks Penny to give him acting lessons to help him engage with his audience. Elsewhere, Koothrappali fantasises about his best friend's partner. Comedy, starring Jim Parsons

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Love Car Displacement (Season 4 Episode 13)
    Season 4 Episode 13:

    E4's Top 20 - The Big Bang Theory: The Love Car Displacement

    Tensions run high when the gang attends a weekend science conference. Wolowitz becomes argumentative after Bernadette runs into a former boyfriend, and the fallout causes chaos with the hotel room arrangements. Comedy, guest starring Rick Fox, with Simon Helberg and Melissa Rauch

  • The Big Bang Theory - The Bus Pants Utilisation (Season 4 Episode 12)
    Season 4 Episode 12:

    The Bus Pants Utilisation

    Leonard's ingenious idea for a new smartphone application puts pressure on his friendship with Sheldon, who fights with him for control of the project. Comedy, starring Johnny Galecki and Simon Helberg

  • The Big Bang Theory - The Justice League Recombination (Season 4 Episode 11)
    Season 4 Episode 11:

    The Justice League Recombination

    The guys have fun at the expense of Penny's boyfriend Zack, but later try to make amends by enlisting his help with the New Year's costume competition at the comic-book store. Comedy, starring Kaley Cuoco and Simon Helberg

  • The Big Bang Theory - Howard's Best Episodes: The Big Bang Theory: The Alien Parasite Hypothesis (Season 4 Episode 10)
    Season 4 Episode 10:

    Howard's Best Episodes: The Big Bang Theory: The Alien Parasite Hypothesis

    Amy finds she has romantic feelings for Penny's former boyfriend Zack, while Raj and Howard begin competing to prove which of them would make the better superhero. Comedy, guest starring Brian Thomas Smith

  • The Big Bang Theory - The Boyfriend Complexity (Season 4 Episode 9)
    Season 4 Episode 9:

    The Boyfriend Complexity

    Penny's dad pays a visit and Leonard discovers she told her parents they were back together, so he plays his boyfriend role to the hilt - much to her dismay. Meanwhile, Raj gets drunk and makes a pass at Howard's girlfriend Bernadette. Guest starring Keith Carradine (Dexter)

  • The Big Bang Theory - The 21-Second Excitation (Season 4 Episode 8)
    Season 4 Episode 8:

    The 21-Second Excitation

    The friends set up camp outside a cinema to get tickets for a new cut of Raiders of the Lost Ark - but find themselves resuming hostilities with Sheldon's old foe Wil Wheaton, the former Star Trek: The Next Generation actor. Meanwhile, Penny and Bernadette invite Amy to a sleepover

  • The Big Bang Theory - The Apology Insufficiency (Season 4 Episode 7)
    Season 4 Episode 7:

    The Apology Insufficiency

    Leonard vows to be more self-assured around women, believing his problem attracting a girlfriend stems from a lack of confidence. An FBI agent interviews the gang to assess Howard's suitability for a team working on a new surveillance satellite. Guest starring Eliza Dushku (Dollhouse)

  • The Big Bang Theory - The Irish Pub Formulation (Season 4 Episode 6)
    Season 4 Episode 6:

    The Irish Pub Formulation

    Raj's sister Priya visits the gang, causing tension when Leonard tries to cover up the fling he once had with her. After discovering his friend's secret, Sheldon struggles to keep quiet, leading the guys to reveal information they have all been keeping from one another

  • The Big Bang Theory - The Desperation Emanation (Season 4 Episode 5)
    Season 4 Episode 5:

    The Desperation Emanation

    Leonard is depressed that everyone seems to be paired off except him, and resorts to desperate measures to get a girlfriend. Meanwhile, Sheldon looks for a way out of his relationship with Amy, who wants him to meet her mother. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - Geekiest Guest Stars: The Hot Troll Deviation (Season 4 Episode 4)
    Season 4 Episode 4:

    Geekiest Guest Stars: The Hot Troll Deviation

    An embarrassing secret from Wolowitz's past comes to light as he tries to win back ex-girlfriend Bernadette, while Sheldon and Raj engage in a battle of wills when they have to work in the same office space. Guest starring Katee Sackhoff (Battlestar Galactica) and George Takei (Star Trek)

  • The Big Bang Theory - The Zazzy Substitution (Season 4 Episode 3)
    Season 4 Episode 3:

    The Zazzy Substitution

    Sheldon breaks up with Amy, and turns to the feline world in his search for an alternative to human companionship. However, when he starts to bulk-buy pet cats, Leonard decides enough is enough, and calls for reinforcements to help bring his friend back to his senses. Comedy, starring Jim Parsons

  • The Big Bang Theory - Sheldon's Best Episodes: The Big Bang Theory: The Cruciferous Vegetable Amplification (Season 4 Episode 2)
    Season 4 Episode 2:

    Sheldon's Best Episodes: The Big Bang Theory: The Cruciferous Vegetable Amplification

    Sheldon tries to extend his lifespan when he realises he will not be around long enough for his consciousness to be downloaded into a robot body, and the friends encounter Apple co-founder Steve Wozniak (guest starring as himself) at the Cheesecake Factory

  • The Big Bang Theory - Howard's Best Episodes: The Big Bang Theory: The Robotic Manipulation (Season 4 Episode 1)
    Season 4 Episode 1:

    Howard's Best Episodes: The Big Bang Theory: The Robotic Manipulation

    Penny is stunned when Sheldon announces he is about to go on his first-ever date, and is even more surprised to find herself tagging along. Meanwhile, Leonard and Raj take a trip to the hospital after Wolowitz's new robotic arm creates problems

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Lunar Excitation (Season 3 Episode 23)
    Season 3 Episode 23:

    E4's Top 20 - The Big Bang Theory: The Lunar Excitation

    Raj and Howard register Sheldon with an online dating site and find his perfect woman, who appears to be his female equivalent. Meanwhile, Penny gets drunk and seduces Leonard, but she regrets it the next day. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco. Mayim Bialik (Blossom) joins the cast

  • The Big Bang Theory - The Staircase Implementation (Season 3 Episode 22)
    Season 3 Episode 22:

    The Staircase Implementation

    The comedy flashes back to reveal how Sheldon saved the lives of his pals, and looks at the origins of his friendship with Leonard seven years previously, as well as explaining the housemates' agreement. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - The Plimpton Stimulation (Season 3 Episode 21)
    Season 3 Episode 21:

    The Plimpton Stimulation

    Sheldon invites a famous physicist to the flat after befriending her online, but is put out to find Leonard showing an interest in her. Meanwhile, Penny has to confront her boyfriend when the visitor turns up in his bedroom. Guest starring Judy Greer (Glenn Martin, DDS)

  • The Big Bang Theory - The Spaghetti Catalyst (Season 3 Episode 20)
    Season 3 Episode 20:

    The Spaghetti Catalyst

    Sheldon tries to hide the fact he had dinner with Penny after she broke up with Leonard, hoping to stay friends with her. However, keeping secrets does not prove to be his area of expertise, and it is not long before for his double life is exposed. Comedy, starring Jim Parsons, Kaley Cuoco and Johnny Galecki

  • The Big Bang Theory - The Wheaton Recurrence (Season 3 Episode 19)
    Season 3 Episode 19:

    The Wheaton Recurrence

    Leonard tells Penny he loves her, but fails to get the response he would have liked. Sheldon also finds himself competing against Star Trek: The Next Generation actor Wil Wheaton once again when the gang goes bowling - and tries to get his revenge

  • The Big Bang Theory - The Pants Alternative (Season 3 Episode 18)
    Season 3 Episode 18:

    The Pants Alternative

    Sheldon is awarded a prestigious prize by the university but worries about the speech he will have to make when collecting the award so Penny and Koothrappali try to build up his confidence - with little success

  • The Big Bang Theory - The Precious Fragmentation (Season 3 Episode 17)
    Season 3 Episode 17:

    The Precious Fragmentation

    The friends fight over a ring they believe was used in The Lord of the Rings. Leonard hopes to return the item to its rightful owner - but Raj wishes to sell it so he can buy a jet ski, and Sheldon takes on the persona of Gollum when he becomes obsessed with the piece of jewellery

  • The Big Bang Theory - Geekiest Guest Stars: The Excelsior Acquisition (Season 3 Episode 16)
    Season 3 Episode 16:

    Geekiest Guest Stars: The Excelsior Acquisition

    Sheldon misses an opportunity to meet Spiderman creator Stan Lee when he has to go to court for driving through a red light while taking Penny to hospital, and his anger at the inconvenient timing leads to him being imprisoned. Feeling guilty, Penny finds out the address of the man behind the superhero and takes Sheldon there - but his troubles with the law have yet to reach their conclusion and the visit does not go as expected

  • The Big Bang Theory - The Large Hadron Collision (Season 3 Episode 15)
    Season 3 Episode 15:

    The Large Hadron Collision

    When Leonard is invited to see the world's largest particle accelerator in Switzerland, he asks Penny to join him as a Valentine's Day treat - much to the disappointment of Sheldon, who tries to persuade the couple to allow him to take her place

  • The Big Bang Theory - Sheldon's Best Episodes: The Big Bang Theory: The Einstein Approximation (Season 3 Episode 14)
    Season 3 Episode 14:

    Sheldon's Best Episodes: The Big Bang Theory: The Einstein Approximation

    Sheldon develops a mental block and has difficulty working on a formula, so in a move inspired by Albert Einstein he gets a job at the Cheesecake Factory diner to try to revive his creativity - and despite Penny's objections, proves surprisingly effective in the role. Guest starring Yeardley Smith (The Simpsons)

  • The Big Bang Theory - The Bozeman Reaction (Season 3 Episode 13)
    Season 3 Episode 13:

    The Bozeman Reaction

    Leonard and Sheldon's flat is burgled, so they work on a state-of-the-art security system in a bid to outwit any future would-be thieves. However, their plans go awry when they ensnare Penny in a net. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - The Psychic Vortex (Season 3 Episode 12)
    Season 3 Episode 12:

    The Psychic Vortex

    Raj lusts after a girl he meets while attending a university party with Sheldon, and Leonard lives to regret airing his disapproval of Penny's belief in psychics. Comedy, starring Kunal Nayyar and Jim Parsons

  • The Big Bang Theory - The Maternal Congruence (Season 3 Episode 11)
    Season 3 Episode 11:

    The Maternal Congruence

    When his mother turns up unannounced, Leonard's horror turns to anger when he learns Sheldon knew about the visit - and his parents' divorce - before him. After going out drinking with Penny, Leonard's mother and Sheldon kiss. Guest starring Christine Baranski (The Good Wife)

    Thursday 25th December 11:00pm EST - WNYW (FOX)

  • The Big Bang Theory - The Gorilla Experiment (Season 3 Episode 10)
    Season 3 Episode 10:

    The Gorilla Experiment

    Wolowitz accuses Leonard of being interested in his girlfriend after Bernadette shows interest in his experiments, while Penny is also jealous and asks Sheldon to teach her physics so she can discuss Leonard's work with him. Johnny Galecki, Simon Helberg and Kaley Cuoco star

  • The Big Bang Theory - The Vengeance Formulation (Season 3 Episode 9)
    Season 3 Episode 9:

    The Vengeance Formulation

    Howard starts avoiding Bernadette after his fears grow about committing to her, but he soon realises he has made a mistake and tries to compensate for it. Meanwhile, Kripke plays a prank on Sheldon during a radio interview, and the victim finds himself caught out by the Dean when he tries to get revenge. Johnny Galecki, Simon Helberg and Kaley Cuoco star, with an appearance by Katee Sackhoff (Battlestar Galactica) as herself

  • The Big Bang Theory - The Adhesive Duck Deficiency (Season 3 Episode 8)
    Season 3 Episode 8:

    The Adhesive Duck Deficiency

    Leonard, Rajesh and Howard go camping to watch the Leonid meteor shower, but the trip takes an unexpected turn thanks to some specially baked cookies. Meanwhile, Penny injures herself when she slips in the shower, and with the rest of the gang out of town, it is left to Sheldon to come to her aid

  • The Big Bang Theory - The Guitarist Amplification (Season 3 Episode 7)
    Season 3 Episode 7:

    The Guitarist Amplification

    A jealous Leonard argues with Penny when she invites one of her male friends to stay at her apartment while he is in town. Unfortunately, the row brings up unpleasant memories for Sheldon of watching his warring parents, causing even more tension between the friends. Johnny Galecki, Kaley Cuoco and Jim Parsons star

  • The Big Bang Theory - The Cornhusker Vortex (Season 3 Episode 6)
    Season 3 Episode 6:

    The Cornhusker Vortex

    Leonard worries his lack of American football knowledge is alienating him from Penny and her friends. However, he finds an unlikely sporting tutor in the form of Sheldon, who reluctantly spent most of his childhood attending games with his father. Meanwhile, Raj is infuriated when Howard abandons him to pursue a girl at a kite-fighting contest

  • The Big Bang Theory - The Creepy Candy Coating Corollary (Season 3 Episode 5)
    Season 3 Episode 5:

    The Creepy Candy Coating Corollary

    Sheldon is given the chance to square off against the one actor from the Star Trek franchise he holds a grudge against - Wil Wheaton. Meanwhile, Leonard asks Penny to set Howard up on a date with one of her friends. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - The Pirate Solution (Season 3 Episode 4)
    Season 3 Episode 4:

    The Pirate Solution

    Raj accepts Sheldon's offer to work for him as he is desperate to avoid being sent back to India. Howard starts spending more time with Leonard and Penny, who would rather be left alone. Johnny Galecki, Simon Helberg and Kaley Cuoco star

  • The Big Bang Theory - Howard's Best Episodes: The Big Bang Theory: The Gothowitz Deviation (Season 3 Episode 3)
    Season 3 Episode 3:

    Howard's Best Episodes: The Big Bang Theory: The Gothowitz Deviation

    Leonard tries to mould Penny into his dream woman and rewards her with chocolate when she does things he approves of - in the hope that she will keep doing them. Meanwhile, Howard and Raj meet two women at a goth nightclub, and things appear to be going well until the ladies take them to a tattoo shop

  • The Big Bang Theory - The Jiminy Conjecture (Season 3 Episode 2)
    Season 3 Episode 2:

    The Jiminy Conjecture

    Sheldon and Howard stake their most highly prized comic books on a bet to determine the species of a cricket, while Leonard and Penny struggle to recover from an awkward first night together. Johnny Galecki, Simon Helberg and Kaley Cuoco star

  • The Big Bang Theory - The Electric Can Opener Fluctuation (Season 3 Episode 1)
    Season 3 Episode 1:

    The Electric Can Opener Fluctuation

    Sheldon returns to Texas in disgrace when he discovers his friends tampered with the Arctic expedition data after growing tired of his quest for a scientific breakthrough. Leonard becomes frustrated when constant interruptions affect his attempts to woo Penny, but his mood improves when the pair finally sleep together

  • The Big Bang Theory - Monopolar Expedition (Season 2 Episode 23)
    Season 2 Episode 23:

    Monopolar Expedition

    Sheldon wins a grant to pay for a summer expedition to the North Pole, and invites his friends to join him. However, the gang's imminent departure causes Leonard and Penny to reconsider their feelings for each other. Johnny Galecki and Kaley Cuoco star

  • The Big Bang Theory - The Classified Materials Turbulence (Season 2 Episode 22)
    Season 2 Episode 22:

    The Classified Materials Turbulence

    Stuart takes Penny out for a second date, during which she drunkenly reveals her true feelings. Meanwhile, Wolowitz uncovers a flaw in the toilet he designed for a Nasa space shuttle, and enlists the aid of friends to correct it before the craft is launched. Kaley Cuoco, Kevin Sussman and Simon Helberg star

  • The Big Bang Theory - The Vegas Renormalisation (Season 2 Episode 21)
    Season 2 Episode 21:

    The Vegas Renormalisation

    Sheldon is forced to spend the night at Penny's after accidentally locking himself out of his own apartment. Meanwhile, Leonard and Raj take a heartbroken Wolowitz to Las Vegas to cheer him up, where they pay a prostitute to take an interest in their downhearted friend. With guest star Jodi Lynn O'Keefe (Prison Break)

  • The Big Bang Theory - The Hofstadter Isotope (Season 2 Episode 20)
    Season 2 Episode 20:

    The Hofstadter Isotope

    Penny catches the eye of a comic-book shopkeeper, and Leonard is devastated when she gives serious consideration to dating her new admirer. Desperate for help, Leonard enlists Sheldon to discredit his love rival by preying on his obsessive enthusiasm with Batman. Johnny Galecki, Kaley Cuoco and Kevin Sussman star

  • The Big Bang Theory - The Dead Hooker Juxtaposition (Season 2 Episode 19)
    Season 2 Episode 19:

    The Dead Hooker Juxtaposition

    Penny feels threatened when another sexy woman, who has landed a role in TV series CSI, moves into the apartment building, and gradually begins to sense that her friends are being manipulated by the new arrival. Comedy, starring Kaley Cuoco, Valerie Azlynn, Johnny Galecki and Simon Helberg

  • The Big Bang Theory - The Work Song Nanocluster (Season 2 Episode 18)
    Season 2 Episode 18:

    The Work Song Nanocluster

    Penny starts her own hair accessories business and the orders start to pile in. However, she makes the mistake of asking Sheldon to help, leading to frustration and regret. Comedy, starring Jim Parsons and Kaley Cuoco

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Terminator Decoupling (Season 2 Episode 17)
    Season 2 Episode 17:

    E4's Top 20 - The Big Bang Theory: The Terminator Decoupling

    While travelling to San Francisco, Leonard, Sheldon, Wolowitz and Raj discover actor Summer Glau is sharing a train with them. Desperate to discuss the Terminator TV series with her, the friends devise a series of plans to engage her in conversation. With Johnny Galecki, Simon Helberg, Jim Parsons and Rajesh Nayyar

    Sunday 28th December 9:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Cushion Saturation (Season 2 Episode 16)
    Season 2 Episode 16:

    The Cushion Saturation

    Tensions between Sheldon and Penny reach an all-time high after a paintballing accident leaves an ugly stain on the awkward physicist's favourite couch cushion. Meanwhile, romance blossoms between Leslie and Wolowitz. Jim Parsons and Kaley Cuoco star

    Sunday 28th December 9:00pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Maternal Capacitance (Season 2 Episode 15)
    Season 2 Episode 15:

    The Maternal Capacitance

    Leonard and Penny share an intimate moment as they recover from receiving a psychological deconstruction from the physicist's emotially distant mother, an expert in psychiatry and neural sciences. Guest starring Mamma Mia! actor Christine Baranski

    Sunday 28th December 8:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Financial Permeability (Season 2 Episode 14)
    Season 2 Episode 14:

    The Financial Permeability

    Penny runs into money troubles, so Sheldon offers to lend her some cash to help her pay the rent. However, when Leonard discovers that his neighbour's former boyfriend Kurt is the cause of her financial woes, he gathers the gang for a confrontation. Starring Jim Parsons, Johnny Galecki and Kaley Cuoco

    Sunday 28th December 8:00pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Friendship Algorithm (Season 2 Episode 13)
    Season 2 Episode 13:

    The Friendship Algorithm

    Sheldon decides to put his formidable brain power to use in formulating a scientific procedure for making friends. However, to prove his findings, he must first win the trust of fellow scientist Barry Kripe to gain access to his powerful computer. Comedy, starring Jim Parsons and John Ross Bowie

    Today at 9:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Killer Robot Instability (Season 2 Episode 12)
    Season 2 Episode 12:

    The Killer Robot Instability

    Sheldon and the gang are excited when Barry Kripke challenges them to a robot duel and they cannot wait to start building their 'killer' machine called Monte. Meanwhile, Penny confronts Wolowitz about his crude behaviour toward women. Guest starring John Ross Bowie

    Today at 9:00pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - Sheldon's Best Episodes: The Big Bang Theory: The Bath Item Gift Hypothesis (Season 2 Episode 11)
    Season 2 Episode 11:

    Sheldon's Best Episodes: The Big Bang Theory: The Bath Item Gift Hypothesis

    Sheldon's obsession with gift-giving etiquette annoys his friends as Christmas approaches. Meanwhile, Leonard is thrilled to meet an award-winning scientist, only to be filled with jealousy when his new colleague takes an interest in Penny. With guest star Michael Trucco (Battlestar Gallactica and One Tree Hill)

    Thursday 25th December 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Vartabedian Conundrum (Season 2 Episode 10)
    Season 2 Episode 10:

    The Vartabedian Conundrum

    Leonard turns to Penny for advice when his relationship with Stephanie takes off faster than he would have liked, and he realises he is the last person to notice that she has moved in with him. Comedy, starring Johnny Galecki and Kaley Cuoco

    Today at 8:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The White Asparagus Triangulation (Season 2 Episode 9)
    Season 2 Episode 9:

    The White Asparagus Triangulation

    Sheldon is delighted that Leonard has finally managed to find a girlfriend who meets his high standards, but his over-exuberance looks set to cause problems. Jim Parsons and Johnny Galecki star

    Today at 8:00pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Lizard-Spock Expansion (Season 2 Episode 8)
    Season 2 Episode 8:

    The Lizard-Spock Expansion

    A smitten Wolowitz becomes convinced he has met his soul-mate in the form of Stephanie Barnett, a distinguished resident surgeon. However, he fails to realise that the object of his affections is far more interested in Leonard. Less Than Perfect's Sara Rue guest stars

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Panty Pinata Polarisation (Season 2 Episode 7)
    Season 2 Episode 7:

    E4's Top 20 - The Big Bang Theory: The Panty Pinata Polarisation

    Penny begins visiting the boys' flat to watch her favourite shows after her TV breaks down. However, when Sheldon tires of her presence he bans her from his home, only for her to seek an embarrassing form of vengeance. Meanwhile, Howard and Raj search for the America's Next Top Model house

    Thursday 1st January 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Cooper-Nowitzki Theorem (Season 2 Episode 6)
    Season 2 Episode 6:

    The Cooper-Nowitzki Theorem

    An obsessive student takes a shine to Sheldon, and before he knows what has happened, the misanthropic physicist finds himself with a girlfriend. However, his new partner quickly expresses distaste toward his social life, and removes him from his limited circle of friends by forcing him to work on a troublesome scientific problem. With guest star Riki Lindhome

    Wednesday 31st December 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Euclid Alternative (Season 2 Episode 5)
    Season 2 Episode 5:

    E4's Top 20 - The Big Bang Theory: The Euclid Alternative

    Sheldon is forced to confront his fear of driving when both Penny and Howard refuse to give him a lift to work. Desperate to be free of the obligation, Leonard and the gang intervene to discover why the physicist never learned to drive. Comedy, starring Jim Parsons and Johnny Galecki, with Octavia Spencer (The Help)

    Tuesday 30th December 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Griffin Equivalency (Season 2 Episode 4)
    Season 2 Episode 4:

    The Griffin Equivalency

    Leonard encourages Howard and Sheldon to be supportive when Raj is named one of People magazine's '30 to Watch Under 30'. However, when Raj makes a pass at Penny, Leonard struggles to maintain a positive perspective on his friend's new-found confidence. Kunal Nayyar and Kaley Cuoco star, with a guest appearance by Charlie Sheen

    Monday 29th December 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Barbarian Sublimation (Season 2 Episode 3)
    Season 2 Episode 3:

    E4's Top 20 - The Big Bang Theory: The Barbarian Sublimation

    Penny becomes addicted to an online game based on the world of Conan the Barbarian. As her obsession intensifies, she begins to neglect her friends, and seeks, instead, the company of the usually snide Sheldon whom she continually pesters for advice. Starring Kaley Cuoco and Jim Parsons

    Friday 26th December 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Codpiece Topology (Season 2 Episode 2)
    Season 2 Episode 2:

    The Codpiece Topology

    Leonard is dejected to see Penny with another man and decides to cut his losses by going back to fellow scientist Leslie Winkle - a move that upsets Sheldon. Starring Johnny Galecki, Kaley Cuoco and Sara Gilbert

    Wednesday 24th December 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Bad Fish Paradigm (Season 2 Episode 1)
    Season 2 Episode 1:

    The Bad Fish Paradigm

    Sheldon finds himself forced to keep a secret when Penny decides to confide in him about what happened on her disappointing first date with Leonard. Comedy, starring Johnny Galecki, Kaley Cuoco and Jim Parsons

    Tuesday 23rd December 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - The Tangerine Factor (Season 1 Episode 17)
    Season 1 Episode 17:

    The Tangerine Factor

    Following the break-up of Penny's relationship, Leonard finally summons up the courage to ask her out. When she accepts, each of them separately asks Sheldon for advice on how to handle the forthcoming date. Last in series, starring Johnny Galecki, Kaley Cuoco and Jim Parsons

    Tomorrow at 7:30pm EST - WWOR TV Channel 9 (Local New York) (MyNetworkTV)

  • The Big Bang Theory - Howard's Best Episodes: The Big Bang Theory: The Peanut Reaction (Season 1 Episode 16)
    Season 1 Episode 16:

    Howard's Best Episodes: The Big Bang Theory: The Peanut Reaction

    When Penny finds out Leonard's family never celebrated his birthdays she enlists Sheldon's help to organise him a surprise party, while Wolowitz gets him out of the way by staging an emergency hospital visit. Kaley Cuoco and Johnny Galecki star

  • The Big Bang Theory - The Pork Chop Indeterminacy (Season 1 Episode 15)
    Season 1 Episode 15:

    The Pork Chop Indeterminacy

    All Sheldon's friends fall for his sexy twin sister, who has arrived to pay him a visit, but he declares he will have the final say on who can date her - an announcement that particularly dismays Leonard. Comedy, starring Johnny Galecki and Jim Parsons

  • The Big Bang Theory - The Nerdvana Annihilation (Season 1 Episode 14)
    Season 1 Episode 14:

    The Nerdvana Annihilation

    Penny makes fun of Leonard's habit of collecting sci-fi memorabilia, so he decides to give it up - but his friends object and do everything possible to persuade him not to change his ways. Comedy, starring Johnny Galecki and Kaley Cuoco

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Bat Jar Conjecture (Season 1 Episode 13)
    Season 1 Episode 13:

    E4's Top 20 - The Big Bang Theory: The Bat Jar Conjecture

    The gang kicks Sheldon out of the physics bowling team and replace him with Leslie, so he decides to try and prove his superiority by forming a rival squad of his own. Johnny Galecki, Jim Parsons and Kaley Cuoco star

  • The Big Bang Theory - The Jerusalem Duality (Season 1 Episode 12)
    Season 1 Episode 12:

    The Jerusalem Duality

    Sheldon feels threatened when he meets a 15-year-old physics prodigy who is even smarter than he is, so Leonard agrees to help him discredit the precocious youngster's research. Johnny Galecki, Simon Helberg and Kaley Cuoco star

  • The Big Bang Theory - The Pancake Batter Anomaly (Season 1 Episode 11)
    Season 1 Episode 11:

    The Pancake Batter Anomaly

    Sheldon falls ill, and his friends decide to go to a Planet of the Apes movie marathon to keep their distance, knowing he will be in a terrible mood. However, an unsuspecting Penny offers to nurse him. Comedy, starring Johnny Galecki, Simon Helberg and Kaley Cuoco

  • The Big Bang Theory - The Loobenfeld Decay (Season 1 Episode 10)
    Season 1 Episode 10:

    The Loobenfeld Decay

    Sheldon and Leonard invent excuses to avoid having to attend Penny's performance in a production of the stage musical Rent, but maintaining the pretence becomes increasingly complicated. Johnny Galecki, Simon Helberg and Kaley Cuoco star, with DJ Qualls (Road Trip)

  • The Big Bang Theory - The Cooper-Hofstadter Polarisation (Season 1 Episode 9)
    Season 1 Episode 9:

    The Cooper-Hofstadter Polarisation

    Leonard and Sheldon receive an invitation to present their research to a physics conference, but Sheldon's reluctance to pander to his peers causes conflict between the friends - with Penny's intervention only making matters worse. Johnny Galecki and Jim Parsons star

  • The Big Bang Theory - E4's Top 20 - The Big Bang Theory: The Grasshopper Experiment (Season 1 Episode 8)
    Season 1 Episode 8:

    E4's Top 20 - The Big Bang Theory: The Grasshopper Experiment

    Raj's parents set him up on a blind date in the hope of initiating an arranged marriage, but after a promising start it becomes apparent that the girl in question is more interested in Sheldon. Meanwhile, Penny begins her new job as a bartender. Starring Kunal Nayyar and Jim Parsons

  • The Big Bang Theory - The Dumpling Paradox (Season 1 Episode 7)
    Season 1 Episode 7:

    The Dumpling Paradox

    Howard hooks up with one of Penny's promiscuous friends, prompting the guys to fly into a panic and enlist their neighbour to make up the numbers to play a video game. Starring Simon Helberg, Kaley Cuoco and Johnny Galecki

  • The Big Bang Theory - The Middle Earth Paradigm (Season 1 Episode 6)
    Season 1 Episode 6:

    The Middle Earth Paradigm

    Penny hosts a Halloween costume party, which proves to be a worthy test for Leonard, Sheldon, Howard and Raj's social skills. During the event, Leonard has a run-in with Penny's ex-boyfriend. Kaley Cuoco, Johnny Galecki and Simon Helberg star

  • The Big Bang Theory - The Hamburger Postulate (Season 1 Episode 5)
    Season 1 Episode 5:

    The Hamburger Postulate

    Leonard fears he is wasting his time with Penny and ends up spending the night with fellow scientist Leslie. However he is disappointed when she later tells him she was only interested in a one-night stand. Meanwhile, Sheldon frets over a variation to his hamburger routine. Starring Johnny Galecki, Kaley Cuoco and Jim Parsons

  • The Big Bang Theory - The Luminous Fish Effect (Season 1 Episode 4)
    Season 1 Episode 4:

    The Luminous Fish Effect

    Sheldon is fired for being disrespectful to his boss, and explores new activities in a bid to find a purpose in life other than physics, but Leonard takes drastic action to restore him to his old self. Laurie Metcalf (Desperate Housewives) guest stars as Sheldon's mother

    Thursday 1st January 10:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - Geekiest Guest Stars: The Fuzzy Boots Corollary (Season 1 Episode 3)
    Season 1 Episode 3:

    Geekiest Guest Stars: The Fuzzy Boots Corollary

    Leonard is upset to learn Penny is dating someone, so his friends and fellow scientists encourage him to seek a new romance by asking another woman out. Guest starring Sara Gilbert (Roseanne), with Johnny Galecki and Kaley Cuoco

    Thursday 1st January 10:00pm EST - Turner Broadcasting System

  • The Big Bang Theory - The Big Bran Hypothesis (Season 1 Episode 2)
    Season 1 Episode 2:

    The Big Bran Hypothesis

    Leonard enlists his room-mate's help when he agrees to drop off a parcel for new neighbour Penny, but when Sheldon sees how messy her room is, he attempts to do a good deed which is not well received. Johnny Galecki, Jim Parsons and Kaley Cuoco star

    Thursday 1st January 9:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - Pilot (Season 1 Episode 1)
    Season 1 Episode 1:

    Pilot

    Comedy about two friends who understand more about the laws of physics than they do about interacting with other people. When a free-spirited beauty called Penny moves in next door, Leonard is immediately smitten with her, but Sheldon warns him he runs the risk of a broken heart if he tries to romance her. Johnny Galecki, Simon Helberg and Kaley Cuoco star

    Wednesday 31st December 10:30pm EST - Turner Broadcasting System

  • The Big Bang Theory - It All Started with a Bang (Special)

    It All Started with a Bang

    Rick Edwards celebrates the 100th episode of the American comedy by taking a look back at some of the show's most memorable scenes. He meets members of the cast and crew on-set in Hollywood, where they share their own favourite moments, and reveal a selection of behind-the-scenes secrets

  • The Big Bang Theory - Access All Areas (Special)

    Access All Areas

    An evening of special programming to celebrate the 100th episode of the sitcom, beginning with Rick Edwards travelling to Hollywood for a behind-the-scenes visit to the comedy's set, catching up with the cast and learning everything there is to know about the show

  • The Big Bang Theory - The Clean Room Infiltration (Episode 177)

    The Clean Room Infiltration

    Leonard y Wolowitz se enfrentan por una emergencia en el trabajo; Amy y Sheldon hacen una fiesta de Navidad estilo victoriano.

  • The Big Bang Theory - The Champagne Reflection (Episode 176)

    The Champagne Reflection

    En este episodio de The Big Bang Theory, Howard, Leonard y Raj repasan la investigación de su profesor fallecido.

  • The Big Bang Theory - The Septum Deviation (Episode 175)

    The Septum Deviation

    A Leonard le hacen una pequeña operación en la nariz; Bernadette y Howard intentan mejorar su matrimonio.

  • The Big Bang Theory - The Prom Equivalency (Episode 174)

    The Prom Equivalency

    Sheldon se siente presionado a participar en el baile de fin de curso que preparan los chicos en el tejado.

  • The Big Bang Theory - The Misinterpretation Agitation (Episode 173)

    The Misinterpretation Agitation

    Los chicos intentan ayudar a Penny cuando tiene un dilema en su trabajo; Bernadette y Amy hablan sobre sexualidad y mujeres científicas.

  • The Big Bang Theory - The Expedition Approximation (Episode 172)

    The Expedition Approximation

    Raj y Sheldon intentan hacer una simulación de una expedición; Después de una discusión sobre dinero, Penny y Leonard les piden consejo a Bernadette y a Wolowitz.

  • The Big Bang Theory - The Focus Attenuation (Episode 171)

    The Focus Attenuation

    Bernadette y Amy acusan a Penny de ser una agua fiestas durante su fin de semana en Las Vegas; Los chicos tratan de inventar algo grandioso.

  • The Big Bang Theory - The Hook-Up Reverberation (Episode 170)

    The Hook-Up Reverberation

    La honestidad de Raj lo acosa cuando su nueva novia trata a Penny fríamente; los chicos piensan convertirse en socios de Stuart.

  • The Big Bang Theory - The First Pitch Insufficiency (Episode 169)

    The First Pitch Insufficiency

    Wolowitz se siente nervioso cuando se le pide que tire la primera bola en un juego de los Angelinos de Los Ángeles; Penny y Leonard quieren demostrarle a Sheldon que está equivocado al decir que él y Amy son la mejor pareja.

  • The Big Bang Theory - The Junior Professor Solution (Episode 168)

    The Junior Professor Solution

    Cuando Sheldon tiene que enseñar una clase, Howard decide tomarla; Amy aprovecha la tensión entre Penny y Bernadette.

  • The Big Bang Theory - The Gorilla Dissolution (Episode 167)

    The Gorilla Dissolution

    Un mal día obliga a Penny a re-evaluar sus opciones - incluyendo a Leonard; Bernadette y Howard deben cuidar a la señora Wolowitz; Sheldon ofrece consejos sobre relaciones a Raj.

  • The Big Bang Theory - The Proton Transmogrification (Episode 166)

    The Proton Transmogrification

    El profesor Proton ayuda a Sheldon a lidiar con el dolor; Leonard inicia una competencia con Penny; Bernadette y Amy preparan un regalo del día de 'La Guerra de las Galaxias' para los chicos.

  • The Big Bang Theory - The Anything Can Happen Recurrence (Episode 165)

    The Anything Can Happen Recurrence

    Sheldon da espontaneidad a un intento, lo cual causa fricción inesperada para Penny, Bernadette y Amy; Raj pide ayuda con la preparación de una cita con Emily Howard.

  • The Big Bang Theory - The Relationship Diremption (Episode 164)

    The Relationship Diremption

    Sheldon tiene una crisis personal cuando decide que la Teoría de cuerdas es una perdida de su tiempo; una cita doble termina en vergüenza para Howard.

  • The Big Bang Theory - The Status Quo Combustion (Episode 163)

    The Status Quo Combustion

    Ante un futuro incierto, Sheldon considera un cambio importante; Emily y Raj deciden llevar las cosas al siguiente nivel.

  • The Big Bang Theory - The Locomotion Interruption (Episode 162)

    The Locomotion Interruption

    Leonard y Amy hacen un viaje inesperado a Arizona para buscar a Sheldon; Penny tiene una entrevista de trabajo en Barnadette's Company; la relación entre Stuart y Mrs. Wolowitz perturba a Howard.

  • The Big Bang Theory - The Indecision Amalgamation (Episode 161)

    The Indecision Amalgamation

    Raj lucha contra la culpa cuando sale con dos mujeres a la vez; Penny tiene la oportunidad de estar en una película.

  • The Big Bang Theory - The Mommy Observation (Episode 160)

    The Mommy Observation

    Sheldon se enfrenta a una nueva realidad cuando él visita a su mamá en Houston; una fiesta misteriosa provoca discusiones.

  • The Big Bang Theory - The Friendship Turbulence (Episode 159)

    The Friendship Turbulence

    Bernadette intenta negociar la paz entre Sheldon y Wolowitz; Penny recibe una oferta vergonzosa; Raj quiere que Amy le escriba a una mujer en su nombre.

  • The Big Bang Theory - The Table Polarization (Episode 158)

    The Table Polarization

    Cuando Leonard compra una mesa para el comedor, Sheldon vuelve a evaluar los cambios en su vida; Bernadette se desgarra cuando Wolowitz tiene la oportunidad de regresar al espacio.

  • The Big Bang Theory - The Locomotive Manipulation (Episode 157)

    The Locomotive Manipulation

    Sheldon y Amy salen de viaje a un viñedo con Howard y Bernadette; Penny y Leonard llevan al perro de Raj al veterinario.

  • The Big Bang Theory - The Convention Conundrum (Episode 156)

    The Convention Conundrum

    Incapaz de obtener boletos para Comic-Con, Sheldon intenta organizar su propia convención y termina pasando una noche salvaje con James Earl Jones; las damas intentan actuar maduramente.

  • The Big Bang Theory - The Occupation Recalibration (Episode 155)

    The Occupation Recalibration

    Sheldon debe aprender a relajarse cuando él se ve obligado a tomar unas vacaciones; Leonard intenta apoyar a Penny cuando ella renuncia a su trabajo; Bernadette necesita reemplazar uno de los cómics de Stuart.

  • The Big Bang Theory - The Hesitation Ramification (Episode 154)

    The Hesitation Ramification

    Mientras Leonard intenta ayudar a Penny con una decepción, Penny le hace una pregunta contundente acerca de su relación; Sheldon quiere aprender a ser divertido.

  • The Big Bang Theory - The Cooper Extraction (Episode 153)

    The Cooper Extraction

    Mientras Sheldon está en Texas, el resto del grupo se da cuenta de lo mucho que él ha cambiado sus vidas mientras decoran el árbol de Navidad del departamento.

  • The Big Bang Theory - The Discovery Dissipation (Episode 152)

    The Discovery Dissipation

    Amy y Leonard intentan ayudar a Sheldon a superar su vergüenza; Raj se queda con Bernadette y Howard durante una semana.

  • The Big Bang Theory - The Thanksgiving Decoupling (Episode 151)

    The Thanksgiving Decoupling

    Cuando el grupo decide pasar el Día de Acción de Gracias en la casa de la Sra. Wolowitz, Sheldon protesta; Leonard y Penny se enfrentan a un error de su pasado.

  • The Big Bang Theory - The Itchy Brain Simulation (Episode 150)

    The Itchy Brain Simulation

    Sheldon hace que Leonard camine una milla con sus zapatos cuando sale a la luz un error; Penny decide confrontar a la ex de Raj.

  • The Big Bang Theory - The Romance Resonance (Episode 149)

    The Romance Resonance

    El último avance científico de Sheldon lo deja sintiéndose como un fraude; un gesto romántico entre Howard y Bernadette causa que Penny aumente su juego con Leonard.

  • The Big Bang Theory - The Workplace Proximity (Episode 148)

    The Workplace Proximity

    La relación de Sheldon y Amy es puesta a prueba cuando ella acepta un trabajo en la universidad; una pelea con Bernadette provoca que Howard tenga que dormir en el sillón de Raj.

  • The Big Bang Theory - The Proton Displacement (Episode 147)

    The Proton Displacement

    Cuando el profesor Proton le pide ayuda a Leonard con un experimento, Sheldon se venga haciéndose amigo del rival de Proton, Bill Nye.

  • The Big Bang Theory - The Raiders Minimization (Episode 146)

    The Raiders Minimization

    Sheldon quiere vengarse después de que Amy arruina uno de sus filmes favoritos; Leonard descubre una forma para que Penny no haga nada; Stuart y Raj hacen perfiles para tener citas en línea.

  • The Big Bang Theory - The Scavenger Vortex (Episode 145)

    The Scavenger Vortex

    Raj diseña una búsqueda del tesoro que saca lo mejor -- y lo peor -- en todo el grupo.

  • The Big Bang Theory - The Deception Verification (Episode 143)

    The Deception Verification

    La amistad de Leonard y Sheldon es puesta a prueba; la relación de Wolowitz con su mamá causa una amenaza a su masculinidad.

  • The Big Bang Theory - The Hofstadter Insufficiency (Episode 142)

    The Hofstadter Insufficiency

    Sheldon y Penny comparten secretos mientras Leonard no está; Wolowitz ayuda a Raj con su ex.

  • The Big Bang Theory - The Love Spell Potential (Episode 140)

    The Love Spell Potential

    La relación de Amy y Sheldon da un giro sorprendente durante un juego de 'Dungeons & Dragons'; Lucy y Koothrappali tienen una cita muy incómoda.

  • The Big Bang Theory - The Proton Resurgence (Episode 139)

    The Proton Resurgence

    Leonard y Sheldon contratan al conductor de su programa de televisión favorito de la infancia para que actúe; Bernadette y Howard se meten en problemas mientras cuidan al perro de Raj.

  • The Big Bang Theory - The Closure Alternative (Episode 138)

    The Closure Alternative

    Amy intenta ayudar a Sheldon a superar su necesidad compulsiva cuando uno de sus programas favoritos de televisión es cancelado; Raj descubre un secreto acerca de Lucy.

  • The Big Bang Theory - The Bon Voyage Reaction (Episode 137)

    The Bon Voyage Reaction

    Cuando Leonard recibe una oportunidad de trabajo para laborar en Europa, Penny y Sheldon son sorprendidos.

  • The Big Bang Theory - The Tenure Turbulence (Episode 136)

    The Tenure Turbulence

    Las chicas se involucran cuando Leonard, Sheldon y Raj compiten por la permanencia en universidad.

  • The Big Bang Theory - The Closet Reconfiguration (Episode 135)

    The Closet Reconfiguration

    Howard considera si debe o no abrir una carta de su padre; Penny y Leonard son anfitriones en un cóctel para adultos.

  • The Big Bang Theory - The Contractual Obligation Implementation (Episode 134)

    The Contractual Obligation Implementation

    Leonard, Sheldon y Wolowitz hablan con chicas de secundaria acerca de carreras relacionadas con la ciencia; Raj planea una cita con Lucy.

  • The Big Bang Theory - The Monster Isolation (Episode 133)

    The Monster Isolation

    Los habilidades de actuación de Penny impresiona a Sheldon.

  • The Big Bang Theory - The Tangible Affection Proof (Episode 132)

    The Tangible Affection Proof

    Los chicos buscan un regalo perfecto de Día de San Valentín para sus personas allegadas; Stuart y Raj realizan una fiesta de 'gente solitaria' en la tienda de libros de historieta.

  • The Big Bang Theory - The Spoiler Alert Segmentation (Episode 131)

    The Spoiler Alert Segmentation

    Sheldon y Leonard se pelean; Raj ayuda Sra. Wolowitz.

  • The Big Bang Theory - The Cooper/Kripke Inversion (Episode 130)

    The Cooper/Kripke Inversion

    Sheldon se enfrenta a una crisis de confianza cuando se ve obligado a trabajar con su némesis, Barry Kripke.

  • The Big Bang Theory - The Bakersfield Expedition (Episode 129)

    The Bakersfield Expedition

    Mientras los chicos usan disfraces y viajan por carretera a una convención de cómics, las damas deciden quedarse en casa e intentan interpretar un libro de historietas.

  • The Big Bang Theory - The Egg Salad Equivalency (Episode 128)

    The Egg Salad Equivalency

    Cuando Sheldon es acusado de acoso sexual, él termina provocándoles muchos problemas a Raj, Leonard y Wolowitz.

  • The Big Bang Theory - The Santa Simulation (Episode 127)

    The Santa Simulation

    Sheldon recuerda la Navidad durante un juego; Amy, Penny y Bernadette le buscan una cita a Koothrappali.

  • The Big Bang Theory - The Fish Guts Displacement (Episode 126)

    The Fish Guts Displacement

    Amy se enferma y Sheldon intenta cuidarla mientras se recupera; Wolowitz y su suegro planean un viaje de pesca.

  • The Big Bang Theory - The Parking Spot Escalation (Episode 125)

    The Parking Spot Escalation

    La pelea de Sheldon y Wolowitz por un lugar de estacionamiento en la universidad impacta al grupo.

  • The Big Bang Theory - The 43 Peculiarity (Episode 124)

    The 43 Peculiarity

    Raj y Howard intentan descubrir por qué Sheldon desaparece cada tarde a las 2:45; los celos aumentan en la relación de Penny y Leonard.

  • The Big Bang Theory - The Habitation Configuration (Episode 123)

    The Habitation Configuration

    Bernadette quiere que Wolowitz se salga de la casa de su mamá; Sheldon está atrapado en medio de la discusión entre Amy y Wil Wheaton.

  • The Big Bang Theory - The Extract Obliteration (Episode 122)

    The Extract Obliteration

    Un juego amenaza la relación de Sheldon con Stephen Hawking; Penny se inscribe en secreto para una clase universitaria.

  • The Big Bang Theory - The Holographic Excitation (Episode 121)

    The Holographic Excitation

    El grupo se dirige a la tienda de libros de historietas de Stuart para celebrar Halloween; Leonard usa la ciencia para seducir a Penny.

  • The Big Bang Theory - The Re-Entry Minimization (Episode 120)

    The Re-Entry Minimization

    El regreso de Wolowitz del espacio no es todo lo que él esperaba; juego se convierte en una guerra.

  • The Big Bang Theory - The Decoupling Fluctuation (Episode 119)

    The Decoupling Fluctuation

    Sheldon intenta intervenir cuando él descubre que Penny está pensando terminar su relación con Leonard; Howard is picked on.

  • The Big Bang Theory - The Higgs Boson Observation (Episode 118)

    The Higgs Boson Observation

    Amy se siente amenazada por la nueva asistente de Sheldon; Wolowitz empieza a sentir las presiones de estar en el espacio.

  • The Big Bang Theory - The Date Night Variable (Episode 117)

    The Date Night Variable

    Raj enfrenta su soledad mientras sus amigos tienen citas; Wolowitz es arrastrado a una pelea entre Bernadette y su mamá, mientras está en el espacio.

  • The Big Bang Theory - The Launch Acceleration (Episode 116)

    The Launch Acceleration

    Planes de boda son puestos en peligro cuando NASA cambia la fecha de su viaje espacial; Penny es sorprendida por la propuesta de Leonard.

  • The Big Bang Theory - The Stag Convergence (Episode 115)

    The Stag Convergence

    La historia sexual de Howard hace reconsiderar a Bernadette sobre su futuro juntos.

  • The Big Bang Theory - The Countdown Reflection (Episode 114)

    The Countdown Reflection

    Ganga organiza la boda de Wolowitz y Bernadette, antes que él parta para su viaje al espacio.

  • The Big Bang Theory - The Hawking Excitation (Episode 113)

    The Hawking Excitation

    Cuando Wolowitz trabaja con Stephen Hawking, Sheldon esta decidido a concer al científico famoso.

  • The Big Bang Theory - The Transporter Malfunction (Episode 112)

    The Transporter Malfunction

    Tras recibir una pieza de colección de Viaje a las Estrellas, Sheldon se encuentra acosado por el Sr. Spock.

  • The Big Bang Theory - The Weekend Vortex (Episode 111)

    The Weekend Vortex

    Sheldon planea un maratón de videojuegos con los chicos en vez de asistir a la fiesta de la tía de Amy.

  • The Big Bang Theory - The Werewolf Transformation (Episode 110)

    The Werewolf Transformation

    La rutina de Sheldon es interrumpida cuando su peluquero se enferma; Wolowitz duda sobre su decisión de ir al espacio.

  • The Big Bang Theory - The Rothman Disintegration (Episode 109)

    The Rothman Disintegration

    Sheldon y Kripke compiten por una oficina; Penny recibe un regalo de Amy.

  • The Big Bang Theory - The Vacation Solution (Episode 108)

    The Vacation Solution

    Sheldon trabaja con Amy en su laboratorio cuando la universidad lo obliga a tomar una vacación.

  • The Big Bang Theory - The Friendship Contraction (Episode 107)

    The Friendship Contraction

    Leonard empieza a reconsiderar su amistad con Sheldon; Wolowitz intenta elegir un apodo de astronauta.

  • The Big Bang Theory - The Beta Test Initiation (Episode 106)

    The Beta Test Initiation

    Penny y Leonard experimentan con su nueva relación; Raj forma una relación con su asistente telefónico virtual.

  • The Big Bang Theory - The Recombination Hypothesis (Episode 105)

    The Recombination Hypothesis

    Todo puede cambiar cuando Leonard invita espontáneamente a Penny a una cena romántica.

  • The Big Bang Theory - The Speckerman Recurrence (Episode 103)

    The Speckerman Recurrence

    Leonard debe enfrentarse a un acosador que lo atacó en la preparatoria.

  • The Big Bang Theory - The Flaming Spittoon Acquisition (Episode 102)

    The Flaming Spittoon Acquisition

    Sheldon está celoso cuando Stuart (Kevin Sussman), un chico de la tienda de libros de historietas, le pide una cita a Amy.

  • The Big Bang Theory - The Ornithophobia Diffusion (Episode 101)

    The Ornithophobia Diffusion

    Leonard y Penny pasan un tiempo solos; Sheldon intenta enfrentar su miedo a los pájaros.

  • The Big Bang Theory - The Isolation Permutation (Episode 100)

    The Isolation Permutation

    Amy está devastada cuando Penny y Bernadette compran vestidos de novia sin ella.

  • The Big Bang Theory - The Rhinitis Revelation (Episode 99)

    The Rhinitis Revelation

    Sheldon compite con todos sus amigos por la atención de su madre (Laurie Metcalf) cuando ella está de visita.

  • The Big Bang Theory - The Good Guy Fluctuation (Episode 97)

    The Good Guy Fluctuation

    Una atractiva arista de los libros de historietas prueba la relación de Leonard y Priya; Sheldon intenta asustar a sus amigos.

  • The Big Bang Theory - The Russian Rocket Reaction (Episode 96)

    The Russian Rocket Reaction

    Wil Wheaton invita a Leonard y Sheldon a una fiesta en su casa; Howard recibe una oportunidad.

  • The Big Bang Theory - The Wiggly Finger Catalyst (Episode 95)

    The Wiggly Finger Catalyst

    Penny presenta a Raj con mujer con quien puede comunicarse.

  • The Big Bang Theory - The Pulled Groin Extrapolation (Episode 94)

    The Pulled Groin Extrapolation

    Amy y Leonard intentan conocerse mejor; Bernadette, Howard y la Sra. Wolowitz pasan el fin de semana juntos.

  • The Big Bang Theory - The Skank Reflex Analysis (Episode 93)

    The Skank Reflex Analysis

    Penny está preocupada porque ha arruinado su relación con sus amigos; Sheldon toma mando del equipo de paintball.

  • The Big Bang Theory - The Infestation Hypothesis (Episode 92)

    The Infestation Hypothesis

    Amy está atrapada en medio de una pelea cuando Penny y Sheldon discuten por una silla; Leonard intenta que su relación a larga distancia sea más emocionante.

  • The Big Bang Theory - The Roommate Transmogrification (Episode 91)

    The Roommate Transmogrification

    Bernadette recibe su doctorado, inspirando a los chicos a que molesten a Wolowitz por su falta de un título.

  • The Big Bang Theory - The Engagement Reaction (Episode 90)

    The Engagement Reaction

    Mamá de Howard termina en el hospital después de escuchar noticias de su compromiso con Bernadette.

  • The Big Bang Theory - The Wildebeest Implementation (Episode 89)

    The Wildebeest Implementation

    Raj intenta curar su ansiedad social; Penny espía a Leonard y a su novia a través de Bernadette.

  • The Big Bang Theory - The Agreement Dissection (Episode 88)

    The Agreement Dissection

    Priya analiza el acuerdo con su compañera de cuarto; las damas sacan a bailar a Sheldon.

  • The Big Bang Theory - The Herb Garden Germination (Episode 87)

    The Herb Garden Germination

    Amy y Sheldon difunden chisme como parte de un experimento; Howard decide dar un gran paso en su relación con Bernadette.

  • The Big Bang Theory - The Zarnecki Incursion (Episode 86)

    The Zarnecki Incursion

    Los chicos intentan averiguar quién robó la cuenta del juego en línea de Sheldon.

  • The Big Bang Theory - The Prestidigitation Approximation (Episode 85)

    The Prestidigitation Approximation

    Leonard tiene que elegir entre Penny y su nueva novia, Priya; el truco de magia de Howard enloquece a Sheldon.

  • The Big Bang Theory - The Toast Derivation (Episode 84)

    The Toast Derivation

    Sheldon se molesta cuando se entera que Leonard es el centro de su grupo de amigos.

  • The Big Bang Theory - The Cohabitation Formulation (Episode 83)

    The Cohabitation Formulation

    Wolowitz considera llevar las cosas con Bernadette al siguiente nivel; Leonard y la hermana de Raj reinician su relación.

  • The Big Bang Theory - The Benefactor Factor (Episode 82)

    The Benefactor Factor

    Un donador rico hace que Leonard se cuestione lo que él quiere hacer por la ciencia.

  • The Big Bang Theory - The Thespian Catalyst (Episode 81)

    The Thespian Catalyst

    Sheldon toma clases de actuación con Penny con la esperanza de ser un mejor maestro; Koothrappali fantasea acerca de la novia de su amigo.

  • The Big Bang Theory - The Love Car Displacement (Episode 80)

    The Love Car Displacement

    Bernadette se encuentra con su ex-novio (Rick Fox) mientras asiste a evento de ciencia con Wolowitz.

  • The Big Bang Theory - The Bus Pants Utilization (Episode 79)

    The Bus Pants Utilization

    La idea de Leonard para una aplicación telefónica provoca una fricción en su amistad con Sheldon.

  • The Big Bang Theory - The Justice League Recombination (Episode 78)

    The Justice League Recombination

    Los chicos participan en un concurso de disfraces con el nuevo novio de Penny.

  • The Big Bang Theory - The Alien Parasite Hypothesis (Episode 77)

    The Alien Parasite Hypothesis

    Amy descubre que ella siente algo por el ex de Penny; Koothrappali y Wolowitz intentan probar quién sería un mejor super héroe.

  • The Big Bang Theory - The Boyfriend Complexity (Episode 76)

    The Boyfriend Complexity

    Penny le pide a Leonard mentirle a su padre (Keith Carradine); Howard, Raj y Bernadette pasan toda una noche en un telescopio.

  • The Big Bang Theory - The 21-Second Excitation (Episode 75)

    The 21-Second Excitation

    Los chicos acampan para ver una película; Penny y Bernadette invitan a Amy a una fiesta de pijamas.

  • The Big Bang Theory - The Apology Insufficiency (Episode 74)

    The Apology Insufficiency

    La entrevista de Sheldon con el FBI pone en peligro la seguridad de Wolowitz.

  • The Big Bang Theory - The Irish Pub Formulation (Episode 73)

    The Irish Pub Formulation

    Leonard mantiene en secreto una aventura a Sheldon, Howard y Raj.

  • The Big Bang Theory - The Desperation Emanation (Episode 72)

    The Desperation Emanation

    Leonard se da cuenta de que es el único en su grupo que no tiene novia; Sheldon quiere deshacerse de su novia.

  • The Big Bang Theory - The Hot Troll Deviation (Episode 71)

    The Hot Troll Deviation

    Un secreto vergonzoso de Wolowitz es revelado; Raj y Sheldon se involucran en guerra en el trabajo.

  • The Big Bang Theory - The Zazzy Substitution (Episode 70)

    The Zazzy Substitution

    Sheldon busca una alternativa para la compañía humana y los chicos se preocupan.

  • The Big Bang Theory - The Cruciferous Vegetable Amplification (Episode 69)

    The Cruciferous Vegetable Amplification

    Sheldon intenta alargar su vida cuando se entera que no podrá transferir su conciencia al cuerpo de un robot.

  • The Big Bang Theory - The Robotic Manipulation (Episode 68)

    The Robotic Manipulation

    Penny analiza a la primera cita de Sheldon; Wolowitz descubre nuevo uso para brazo robótico.

  • The Big Bang Theory - The Lunar Excitation (Episode 66)

    The Lunar Excitation

    Raj y Howard preparan un perfil en línea para citas por Sheldon.

  • The Big Bang Theory - The Staircase Implementation (Episode 65)

    The Staircase Implementation

    Leonard le cuenta a Penny acerca de cómo conoció a Sheldon y que le pasó al elevador.

  • The Big Bang Theory - The Plimpton Stimulation (Episode 64)

    The Plimpton Stimulation

    Leonard y Sheldon compiten por la atención de una física.

  • The Big Bang Theory - The Spaghetti Catalyst (Episode 63)

    The Spaghetti Catalyst

    Sheldon se esfuerza por mantener felices a Leonard y Penny cuando ellos dejan de hablarse.

  • The Big Bang Theory - The Wheaton Recurrence (Episode 62)

    The Wheaton Recurrence

    Una pelea amenaza la relación de Penny y Leonard; Sheldon y Will Wheaton se enfrentan.

  • The Big Bang Theory - The Pants Alternative (Episode 61)

    The Pants Alternative

    El pánico escénico de Sheldon se entromete entre él y un codiciado premio.

  • The Big Bang Theory - The Precious Fragmentation (Episode 60)

    The Precious Fragmentation

    Cuando los chicos compran un anillo de 'El Señor de los Anillos' en una venta de garaje, el articulo amenaza con separarlos.

  • The Big Bang Theory - The Excelsior Acquisition (Episode 59)

    The Excelsior Acquisition

    Sheldon termina en la corte después de recibir una infracción por culpa de Penny.

  • The Big Bang Theory - The Large Hadron Collision (Episode 58)

    The Large Hadron Collision

    Leonard debe decidir quién lo acompañará cuando él vaya a ver el Gran Colisionador de Hadrones el Día de San Valentín.

  • The Big Bang Theory - The Einstein Approximation (Episode 57)

    The Einstein Approximation

    Sheldon intenta encontrar la respuesta a un problema físico trabajando con Penny.

  • The Big Bang Theory - The Bozeman Reaction (Episode 56)

    The Bozeman Reaction

    Después de que su departamento es robado, Leonard y Sheldon buscan a sus amigos para crear un sistema de seguridad de vanguardia.

  • The Big Bang Theory - The Psychic Vortex (Episode 55)

    The Psychic Vortex

    Sheldon y Koothrappali asisten a una reunión universitaria; Leonard descubre que Penny cree en los psíquicos.

  • The Big Bang Theory - The Maternal Congruence (Episode 53)

    The Maternal Congruence

    Leonard está horrorizado cuando su madre (Christine Baranski) lo visita.

  • The Big Bang Theory - The Gorilla Experiment (Episode 52)

    The Gorilla Experiment

    Sheldon trata de ayudar a Penny a entender el trabajo de Leonard; Wolowitz está celoso cuando Leonard comienza a salir con su nueva novia.

  • The Big Bang Theory - The Guitarist Amplification (Episode 51)

    The Guitarist Amplification

    Sheldon intenta hacer las paces cuando Leonard y Penny tienen una discusión.

  • The Big Bang Theory - The Vengeance Formulation (Episode 50)

    The Vengeance Formulation

    Sheldon desea destruir a Kripke después de ser humillado en la radio; Wolowitz intenta no destruir su nueva relación con Bernadette.

  • The Big Bang Theory - The Creepy Candy Coating Corollary (Episode 49)

    The Creepy Candy Coating Corollary

    Sheldon intenta vengarse de su enemigo Wil Wheaton; Wolowitz desea que Penny le ayude con una amiga.

  • The Big Bang Theory - The Adhesive Duck Deficiency (Episode 48)

    The Adhesive Duck Deficiency

    Penny se ve obligada a confiar en Sheldon cuando ella se lesiona, mientras Howard, Leonard y Raj están ausentes.

  • The Big Bang Theory - The Cornhusker Vortex (Episode 47)

    The Cornhusker Vortex

    Sheldon le enseña a Leonard cómo entender el fútbol americano; un incidente en una competencia de papalotes amenaza la amistad de Howard y Raj.

  • The Big Bang Theory - The Pirate Solution (Episode 46)

    The Pirate Solution

    Raj se enfrenta a la deportación si no encuentra un trabajo; Leonard y Penny tratan con Howard como una tercera opción.

  • The Big Bang Theory - The Gothowitz Deviation (Episode 45)

    The Gothowitz Deviation

    Howard y Raj van a un centro nocturno Goth para conocer mujeres; Sheldon intenta modificar la conducta de Penny utilizando chocolates.

  • The Big Bang Theory - The Jiminy Conjecture (Episode 44)

    The Jiminy Conjecture

    Penny y Leonard intentan recuperarse de una relación complicada; Howard y Sheldon hacen una apuesta.

  • The Big Bang Theory - The Electric Can Opener Fluctuation (Episode 43)

    The Electric Can Opener Fluctuation

    Después de manipular la información de la expedición de Sheldon al Ártico, los chicos lo siguen de regreso a Texas, lo que amenaza las oportunidades de Leonard de tener un romance con Penny.

  • The Big Bang Theory - The Classified Materials Turbulence (Episode 42)

    The Classified Materials Turbulence

    Penny hace una revelación sorprendente sobre Leonard durante su cita con Stuart; Wolowitz encuentra un desperfecto crítico de diseño en su proyecto de la NASA.

  • The Big Bang Theory - The Vegas Renormalization (Episode 41)

    The Vegas Renormalization

    Koothrappali y Leonard llevan a Wolowitz a Las Vegas; Sheldon es encerrado con llave en su apartamento.

  • The Big Bang Theory - The Hofstadter Isotope (Episode 40)

    The Hofstadter Isotope

    Wolowitz y Leonard deciden investigar un bar local en la Noche de Damas.

  • The Big Bang Theory - The Dead Hooker Juxtaposition (Episode 39)

    The Dead Hooker Juxtaposition

    Penny desarrolla una rivalidad con una nueva vecina atractiva que amenaza su posición como abeja reina del edificio.

  • The Big Bang Theory - The Cushion Saturation (Episode 38)

    The Cushion Saturation

    Un juego de paintball provoca una pelea entre Sheldon y Penny, y un romance entre Leslie y Wolowitz.

  • The Big Bang Theory - The Financial Permeability (Episode 36)

    The Financial Permeability

    La solución de Sheldon para las dificultades financiales de Penny causa una confrontación entre Leonard y el ex-novio de Penny.

  • The Big Bang Theory - The Killer Robot Instability (Episode 35)

    The Killer Robot Instability

    Cuando un dicho de Penny sobre la vida amorosa de Wolowitz se hace deprimirse, los amigos de él pierden su compañero más importante para su competición de robot.

  • The Big Bang Theory - The Bath Item Gift Hypothesis (Episode 34)

    The Bath Item Gift Hypothesis

    Penny empieza salir con una colega guapo de Leonard; Leonard y sus amigos están molestados por la obsesión de Shelden de la etiqueta de dar regalos.

  • The Big Bang Theory - The Vartabedian Conundrum (Episode 33)

    The Vartabedian Conundrum

    Leonard pide consejo de Penny cuando su relación nueva va demasiado rápido.

  • The Big Bang Theory - The White Asparagus Triangulation (Episode 32)

    The White Asparagus Triangulation

    Sheldon está contenta cuando Leonard sale con una mujer quien tiene las calidades que Sheldon piensa ser necesarias.

  • The Big Bang Theory - The Lizard-Spock Expansion (Episode 31)

    The Lizard-Spock Expansion

    Leonard sin saber sale con la mujer nueva quien Wolowitz piensa es el amor de su vida.

  • The Big Bang Theory - Monopolar Expedition (Episode 30)

    Monopolar Expedition

    Mientras Leonard se prepara para una expedición de ciencia de tres meses, él y Penny reevalúan sus sentimientos de uno hacia el otro.

  • The Big Bang Theory - The Panty Piñata Polarization (Episode 29)

    The Panty Piñata Polarization

    Cuando Sheldon corre a Penny del apartamento por una serie de infracciones, Penny intenta vengarse de él.

  • The Big Bang Theory - The Cooper-Nowitzki Theorem (Episode 28)

    The Cooper-Nowitzki Theorem

    Sheldon y el grupo se confunden cuando una joven estudiante graduada se siente atraída por él.

  • The Big Bang Theory - The Euclid Alternative (Episode 27)

    The Euclid Alternative

    Leonard y sus amigos presentan una intervención para obligar a Sheldon a enfrentar sus temores para manejar.

  • The Big Bang Theory - The Griffin Equivalency (Episode 26)

    The Griffin Equivalency

    Raj incrementa su ego e intenta vengarse de Penny luego de ser nombrado en el artículo de una revista.

  • The Big Bang Theory - The Barbarian Sublimation (Episode 25)

    The Barbarian Sublimation

    Sheldon crea a un monstruo cuando le muestra a Penny un juego en línea.

  • The Big Bang Theory - The Codpiece Topology (Episode 24)

    The Codpiece Topology

    Después de ver a Penny con un joven muy apuesto, Leonard reinicia su relación con Leslie Winkle, la peor enemiga de Sheldon.

  • The Big Bang Theory - The Bad Fish Paradigm (Episode 23)

    The Bad Fish Paradigm

    La primera cita de Penny con Leonard tiene problemas; Penny descubre que Sheldon no es un buen confidente.

  • The Big Bang Theory - The Work Song Nanocluster (Episode 22)

    The Work Song Nanocluster

    El negocio de casa de Penny se vuelve en una completa pesadilla cuando Sheldon se hace cargo.

  • The Big Bang Theory - The Terminator Decoupling (Episode 21)

    The Terminator Decoupling

    Leonard, Sheldon y Wolowitz están extasiados al enterarse de que una famosa actriz de ciencia ficción (Summer Glau) se encuentra abordo del tren a San Francisco con ellos.

  • The Big Bang Theory - The Maternal Capacitance (Episode 20)

    The Maternal Capacitance

    Leonard y Penny se acercan después de una visita desastroso de la madre de Leonard (Christine Baranski).

  • The Big Bang Theory - The Friendship Algorithm (Episode 19)

    The Friendship Algorithm

    Sheldon crea un procedimiento científico para hacer amigos.

  • The Big Bang Theory - The Pork Chop Indeterminacy (Episode 18)

    The Pork Chop Indeterminacy

    Leonard idea un plan para eliminar a sus rivales cuando él, Wolowitz y Koothrappali se enamoran de la hermana gemela de Sheldon, pero su plan falla cuando Sheldon decide elegir con quién saldrá su hermana.

  • The Big Bang Theory - The Tangerine Factor (Episode 17)

    The Tangerine Factor

    Cuando Leonard finalmente se arma de valor para pedirle una cita a Penny, los dos acuden con Sheldon por un consejo.

  • The Big Bang Theory - The Peanut Reaction (Episode 16)

    The Peanut Reaction

    Penny descubre que Leonard no celebra los cumpleaños, por lo que ella planea una fiesta sorpresa; Sheldon inesperadamente vive una de sus más grandes fantasías en una tienda de electrónicos.

  • The Big Bang Theory - The Nerdvana Annihilation (Episode 14)

    The Nerdvana Annihilation

    Leonard y los chicos compran una máquina del tiempo de una película clásica; Penny les cuenta a los chicos que su obsesión por los cómics y los juguetes es patética.

  • The Big Bang Theory - The Bat Jar Conjecture (Episode 13)

    The Bat Jar Conjecture

    Cuando Sheldon trata de demostrar su superioridad mental cuando se entrenan para el Tazón de Física, los chicos lo botan del equipo.

  • The Big Bang Theory - The Jerusalem Duality (Episode 12)

    The Jerusalem Duality

    Sheldon y Leonard buscan una manera de hacer fracasar la investigación de un prodigio de la física de 15 años de edad.

  • The Big Bang Theory - The Pancake Batter Anomaly (Episode 11)

    The Pancake Batter Anomaly

    Leonard y los chicos evitan a Sheldon cuando está enfermo, dejando a Penny a su cuidado hasta que recupere la salud.

  • The Big Bang Theory - The Loobenfeld Decay (Episode 10)

    The Loobenfeld Decay

    Leonard y Sheldon trata de evitar ver la interpretación de Penny después de escuchar su canción, pero la elaborada mentira de Sheldon los lleva a un inesperado resultado.

  • The Big Bang Theory - The Cooper-Hofstadter Polarization (Episode 9)

    The Cooper-Hofstadter Polarization

    Penny intenta mediar cuando Sheldon y Leonard no están de acuerdo en presentar sus conclusiones en una conferencia de psíquicos.

  • The Big Bang Theory - The Grasshopper Experiment (Episode 8)

    The Grasshopper Experiment

    Koothrappali descubre durante una cita a ciegas que puede hablar con una mujer después de algunos tragos, pero la dama se interesa en Sheldon.

  • The Big Bang Theory - The Dumpling Paradox (Episode 7)

    The Dumpling Paradox

    Penny duerme en el sillón de Leonard y Sheldon cuando Wolowitz se apodera del departamento; los chicos le piden a Penny que se una a su equipo 'Halo'.

  • The Big Bang Theory - The Middle Earth Paradigm (Episode 6)

    The Middle Earth Paradigm

    Leonard, Sheldon, Wolowitz y Koothrappali asisten a la fiesta de Halloween de Penny.

  • The Big Bang Theory - The Hamburger Postulate (Episode 5)

    The Hamburger Postulate

    Leonard descubre que su persecución de Penny es infructuosa y tiene un encuentro inesperado con una compañera científica (Sara Gilbert).

  • The Big Bang Theory - The Luminous Fish Effect (Episode 4)

    The Luminous Fish Effect

    Sheldon es despedido y así tiene la oportunidad de explorar la vida más allá de lo físico, pero cuando él empieza a tejer ropa y a actuar como una persona introvertida, Leonard le pide ayuda a la mamá de Sheldon.

  • The Big Bang Theory - The Fuzzy Boots Corollary (Episode 3)

    The Fuzzy Boots Corollary

    Leonard está molesto al descubrir que Penny sale con otra persona y se arma de valor para conseguir una cita con otra mujer.

  • The Big Bang Theory - The Big Bran Hypothesis (Episode 2)

    The Big Bran Hypothesis

    Leonard se ofrece como voluntario para firmar por un paquete, con la esperanza de provocar una buena impresión en Penny.

  • The Big Bang Theory - Pilot (Episode 1)

    Pilot

    Leonard está feliz por conocer a su nueva vecina Penny, pero su compañero de cuarto piensa que él está persiguiendo un sueño imposible.

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