After the family attends Theo's graduation and Olivia leaves for Singapore, Cliff and Clair share a quiet moment.
Too many relatives show up for Theo's graduation; Olivia prepares to join her parents in Singapore.
Cliff runs into problems preparing his tax return; Rudy helps Kenny (Deon Richmond) plan a party for Deirdre (Gabrielle Carmouche).
Cliff enjoys being in the studio for a radio concert featuring Latin jazz artists Mario Bauza and Willie Colon.
While Rudy copes with adolescence, Cliff and Clair learn they may be named legal guardians for the twins.
Clair and her college friends reminisce while planning a testimonial for a retiring professor; Cliff gets a make-over.
Theo makes a decision about his future; Olivia and Marlon (Aaron Beener) interview Cliff for a school assignment.
Sondra and Elvin's (Geoffrey Owens) housewarming party falls through, and Vanessa breaks up with Dabnis (William Thomas Jr.).
Sondra, Elvin (Geoffrey Owens) and the twins move into their own home, much to the delight of Cliff and Clair.
Rudy and Pam (Erika Alexander) take advantage of Cliff's being left in charge of the refrigerator while Clair is away.
Rudy demands proof from Kenny (Deon Richmond) that he has a girlfriend (Gabrielle Carmouche); Pam subs for Cliff's office assistant.
Pam and her friends organize a protest after finding grocery prices higher than usual in her old neighborhood.
Theo is offered a high-paying job with a large West Coast firm when he attends a corporate party.
Clair's new room is off limits to everyone, especially when she is in it; Cliff gets out the Christmas lights.
Breaking up is the activity of the day, as Rudy splits from Stanley (Merlin Santana) and Vanessa leaves Dabnis (William Thomas Jr.).
The Huxtables welcome singer Miriam Makeba, who helps Olivia through the crisis of her father's leaving.
Cliff's lecture at the community center is met with skepticism, so he decides to have a group discussion instead.
Cliff and his neighbor chaperon Olivia's kindergarten class field trip; Theo's fundraising T-shirts are unusual.
Russell and Carrie scrutinize Vanessa's fiance, Dabnis, who is busy helping Cliff install a refrigerator.
Two households under one roof are more than the Huxtables and Sondra and Elvin (Geoffrey Owens) can bear.
Rudy, rebelling against being treated as a child, sneaks out to an over-16 dance club.
Pam's hopes to attend the same college as Charmaine are dashed; Olivia prepares for "show and tell.".
The air contains hints of romance for Theo; an out-and-out crush for Rudy dashes Kenny's (Deon Richmond) hopes.
Just as Clair is about to get a room of her own, Elvin (Geoffrey Owens) and Sondra's house plans go awry.
Vanessa's announcement of her engagement comes as a shock to the family -- but more startling news follows.
In his new job at the counseling center, Theo befriends a boy (Merlin Santana) with a reading problem.
When Theo counsels at a community center, he gets an unexpected reaction from the kids.
Cliff urges two old friends (Red Buttons, E.G. Marshall) who have not spoken to each other for years to reunite.
Cliff and Russell (Earle Hyman) recall baseball's great old days with two retired Negro League players (Frank Robinson, Joe Black).
Rudy dreams that Olivia bewitches the Huxtables and indulges in all sorts of mischief.
When Olivia's cold upsets her plans to sing at an anniversary party, Cliff saves the show.
Theo's special dinner for his girlfriend (Julie Satterfield) is derailed by a variety of visitors.
Clair recalls old times with high-school friend Kris (Leslie Uggams); Rudy tries to arrange her first date.
Cliff and Clair's 27th wedding anniversary is approaching and he has great plans for the celebration.
Things go bump in the night for Rudy the first time she baby-sits Olivia; Cliff and his friend decide to ditch their wives and become partners for the annual pinochle tournament.
A father-to-be (John Ritter) misuses his basketball coaching skills when he coaches his wife (Amy Yasbeck) through labor.
Pam's (Erika Alexander) friends are upset when her good report card reflects attention to her studies; Cliff prepares for the moment when Pam will ask him for a loan.
All that stands between Theo and the dean's list is one more final -- and his dream woman (Vanessa Williams).
The Huxtable men try to watch a championship football game while helping friends move.
Clair is treated like an old woman after the children discover she is beginning menopause.
A neighbor (Ray DeMattis) enlists Cliff's help in father-son bonding; Pam (Erika Alexander) meets a prospective beau.
Denise and Martin's search for an apartment leads to a cramped trailer.
Rudy is not too excited about Clair's planned "women's day.".
As Pam's romance intensifies, she gets practical advice from Cliff and wise counsel from Clair.
Pam's boyfriend begins to pressure her about having a more physical relationship.
In a school assignment, Rudy and Kenny exaggerate Cliff's job.
Cliff and Clair cannot get the children off their backs after they return from vacation.
Clair's second cousin Pam (Erika Alexander) becomes the newest member of the Huxtable household.
Theo wants to throw a belated bachelor party for Martin (Joseph C. Phillips) -- complete with a female stripper.
Cliff's plans to bid on a rare jazz album are sidetracked by "parental" duties.
Rudy is not looking forward to the first day of sixth grade; Vanessa goes off to college.
The family is regaled with tales of life and Huxtable heritage by Cliff's 98-year-old aunt (Minnie Gentry).
Olivia's (Raven-Symone) day-care center becomes the proving ground for Denise's unorthodox teaching style.
A recently divorced friend of Cliff's (Wallace Shawn) "goes gaga" over Clair's pal Bernice (Mercedes Ruehl).
Vanessa defies her parents and travels to Baltimore to attend a concert.
Hoping to relieve Clair of her pressures, Cliff and the family send her away to rest.
Cliff and Clair are surprised to learn that Theo is now living with his girlfriend, Justine (Michelle Thomas).
Theo asks the three married men in the family whether romance dies after marriage.
Rudy is too embarrassed to participate in a school dance presentation, so Clair enrolls her in a tap-dancing class with Howard "Sandman" Sims.
Rudy's attempts to put back "borrowed" money get her deeper into trouble.
Jazz and blues great Riley Jackson (B.B. King) visits the Huxtable home.
It is organic vs. traditional when Olivia celebrates her fourth birthday.
When Vanessa is too shy to approach the boy shy likes, Denise steps in to play matchmaker.
Cliff suffers nightmares after he eats something he shouldn't have. Guest appearance by the Muppets.
Elvin's (Geoffrey Owens) dinner with an old girlfriend (Tonya Pinkins) doesn't go over well at home.
Cliff spends some time alone with Martin; Elvin plays a Christmas elf for charity.
Cliff must handle the household when Clair travels out of town; Theo discovers that having a baby in tow has an amazing effect on women.
Tempers flare when Denise's in-laws (Nancy Wilson, Moses Gunn) visit the Huxtable clan
Denise invites Martin's (Joseph C. Phillips) ex-wife, Paula (Victoria Rowell), for Thanksgiving.
Cliff has a nightmare in which he, Theo, Elvin (Geoffrey Owens) and Martin (Joseph C. Phillips) are all about to give birth.
Rudy is convinced she's in love with a classmate (Michael A. Moran).
Sondra and Elvin reluctantly enlist Denise when they can't find a baby sitter.
The Huxtables are relieved to learn that Theo's learning problems are due to dyslexia.
Denise and her new husband travel to Rhode Island to find a home at the Naval Base; Cliff gets to know his new step-granddaughter.
Vanessa tries to sneak past her parents after getting drunk at a party.
Cliff has to help when Theo and his roommates have trouble with their new landlord.
Denise returns from Africa with a husband (Joseph C. Phillips) and a stepdaughter (Raven-Symone).
Cliff and Clair are reluctant to let Theo go with his class on an Egyptian archaeological dig.
Elvin's mother and Clair use Sondra's strep throat as an excuse to take the babies.
Theo's friend (Troy Winbush) unwittingly gives an expensive watch to his girlfriend (Vanessa Williams).
Cliff and Clair come up with a plan to end Vanessa and Rudy's endless bickering.
Clair's 46th-birthday apprehension is alleviated when Cliff's doctor friend (Placido Domingo) serenades her.
Theo's girlfriend (Michelle Thomas) catches him kissing another woman.
Sondra and Elvin get child-rearing advice from their families.
Former NBA stars (Bill Bradley, Dave DeBusschere, Walt Hazzard, Wali Jones), portray doctors who play a basketball game against younger women (Nancy Lieberman-Cline, Teresa Edwards).
Theo's troubles with Justine (Michelle Thomas) inspire him to visit a voodoo doctor (Moses Gunn).
Cliff and Clair let Rudy stay up as late as she wants when she complains about all the house rules.
Cliff tries to coax the grandfather (Sammy Davis Jr.) of an unwed mother-to-be into providing moral support for the girl.
When Cliff and Clair are away, Theo's small gathering erupts into a wild party.
Clair appears as a guest panelist on a public affairs TV show.
Cliff baby-sits the twins and offers them plenty of grandfatherly advice.
Vanessa tells a fib so she can rendezvous with her boyfriend.
The hamster Rudy is watching for a friend falls ill during the night.
Clair hires a fitness instructor (Debbie Allen) to get her back into shape.
A voice teacher (Betty Carter) helps Vanessa and her friends polish a musical act.
Theo wants a date with Julia (Naomi Campbell) but needs his best friend's (Troy Winbush) help; Rudy owes money to her father.
The grandparents are surprised when Sondra gives birth to twins.
The grandparents are surprised when Sondra gives birth to twins.
Denise must convince her parents that she has found the perfect job.
The family wants better accommodations for Elvin and expectant Sondra.
Rudy invites a precocious friend to have a sleep-over, and Cliff agrees to perform a comedy routine.
Cliff (Bill Cosby) frantically gets in shape for his annual physical.
Denise shocks everyone when she announces she will not return to Hillman College.
While on a fishing trip, Theo accidentally catches a corpse, and the ensuing media attention affects the Huxtables' lives.
Theo and his pals attempt to impress their dates for the senior prom.
Denise comes home for a visit, but would rather spend time with her friends than her family.
Clair's friend turns to her for help when she fears her marriage is in trouble.
Cliff takes on his friend in petanque, an outdoor bowling game.
Rudy's fairy tale comes to life in her dreams -- and her family has starring roles.
Clair and Theo attempt to prevent Cliff from trying to repair a leaky pipe by himself.
Vanessa auditions for drum major; Cliff is introduced to one of his father's musician buddies (Dub Taylor).
Theo visits a friend (Christopher Collet) hospitalized for cancer; Elvin gets in hot water with his spot-on impersonation of Cliff.
Clair and Cliff meet with Rudy's teacher (Melba Moore) to discuss their daughter's refusal to play the violin.
Clair takes Cliff to the first coed meeting of her book discussion group.
Cliff takes Rudy and her friends to a vaudeville tribute show; Vanessa's ex-boyfriend proposes marriage.
Theo fears Vanessa's reputation will be ruined when one of his locker room buddies asks her out on a date.
Theo and Cockroach plan on attending the taping of a TV dance show; Cliff learns "new math" from Vanessa.
The Huxtables go to the mall to cheer Clair's entry in a winter squash contest; Rudy gets lost.
In a series of flashbacks, the Huxtables help Elvin understand Sondra by reliving events from the family's past.
In a series of flashbacks, the Huxtables help Elvin understand Sondra by reliving events from the family's past.
Cliff and his father visit the Huxtables' neighbor (Eileen Heckart).
Cliff and Clair take out their frustrations on each other after Theo gets into trouble with the law.
Hillman College's Dr. Foster (Roscoe Lee Brown) and his friend (Christopher Plummer) help Theo and Cockroach tackle a Shakespeare play.
Cliff misplaces a power drill he borrowed; the children plan a Halloween party.
Rudy plays her parents against each other to wear inappropriate clothes to a party.
Theo comes home late from a cross-country meet and the Huxtable "family court" convenes to find out why.
Sondra and Elvin return from their honeymoon with surprising news for the Huxtables.
The Huxtables visit Hillman College to celebrate the retirement of the school's president.
Cliff treats Rudy and her friends to lunch at an expensive restaurant.
Cliff's longtime friend (Robert Culp) flies in from Chicago for a visit.
Theo offers to run the house when Cliff and Clair have the flu.
Sondra and Elvin announce their engagement; Theo plays practical jokes on the family.
Denise and Sondra come home from college to celebrate their father's 50th birthday.
Denise worries about her soon-to-be-married pregnant friend, and throws her a bridal shower.
Theo accidentally hurts Rudy after convincing her to play circus with him.
Cliff is called to the hospital for three deliveries; Theo is left in charge at home.
Denise anxiously awaits the arrival of her blind date; Vanessa's ex-boyfriend wants to win her back.
Cliff must bargain with a tough salesman when he goes to buy a new car.
Cliff's parents invite Rudy to spend the night at their house.
Elvin uses Cliff to demonstrate a wrestling move, and shares a secret with Theo.
Cliff and his father take charge of the household while Clair and her mother-in-law are visiting Denise at college.
Cliff's father and his Army buddies trade war stories during a card game.
Rudy finds a lost dog, but has trouble letting go when its owner comes to get it.
Denise tries to explain to her parents why she received a below-average grade on an English paper.
Vanessa is labeled a conceited rich girl after two girls visit her home.
Theo is inspired by a school speaker and asks his parents for flying lessons.
Theo is disappointed after he gets an average grade on a history paper that he was sure would get an A.
Friends urge Vanessa to wear makeup even though Clair doesn't allow it.
Theo is torn between two women; Cliff joins Rudy for a spot of tea.
Grandma and Grandpa Huxtable celebrate their 50th wedding anniversary with the Count Basie Orchestra.
Clair puts Cliff on a diet after a friend suffers a mild heart attack.
Cliff and the gang comb the house in search of an elusive snake.
Denise's decision about what college she will attend becomes complicated when Cliff and his father give their advice.
Cliff is determined to settle a score with a former track rival.
Cliff asks his stuffy former English professor to be his partner in a pinochle game.
The family sets out to give Theo a lesson on life's realities.
Theo's math test is postponed when his pregnant teacher goes into labor.
Cliff's friend discusses problems he has encountered with his teenage daughter.
When chaos rules in the Huxtable home, Cliff seeks refuge in his office.
Denise is involved in an auto accident with a limousine carrying singer Stevie Wonder.
Cliff's ex-musician dad (Earle Hyman) plans to come out of retirement to play trombone at a jam session in memory of an old friend; Rudy tells knock-knock jokes.
Rudy helps a friend overcome his fear of the dentist (Danny Kaye).
Theo and his friend Cockroach are ill-prepared for an upcoming test on "Macbeth.".
Vanessa tries to hide her bad report card from her parents; she and Denise fight over a sweater.
Clair is determined to buy a valuable painting done by her great uncle at an auction.
Cliff invites Theo's prim math teacher (Sonia Braga) to dinner.
Denise's friend seeks medical advice from Cliff about a problem she is keeping from her parents.
Clair is determined not to let a broken toe interfere with her personal or professional life.
Clair's sister becomes engaged; Cliff struggles to beat his father-in-law (Joe Williams) at chess.
Cliff gives Denise some pointers as she prepares to buy her first car.
Rudy becomes the star of a youth football team, but Cliff is worried about safety.
Vanessa gets a chance to talk to the cutest boy at school at her first Halloween party.
Theo goes out of his way to impress one of Denise's girlfriends (Robin Givens); Cliff tries to cure his lovesick son.
Cliff gives advice to a young man whom he would like to be Sondra's steady boyfriend.
Clair, Cliff and the children plan a gala 49th anniversary party for Grandpa and Grandma Huxtable.
Cliff's new kitchen gadget tempts Rudy and her friend Peter to make grape juice.
After three months of household turmoil, Cliff and Clair welcome the beginning of the school year.
The Huxtables and the determined director (Tony Orlando) of a community center help a badly beaten boy.
Cliff gets stuck entertaining Rudy's friends during a slumber party.
Cliff's widowed friend has found a new girlfriend who is young enough to be his daughter.
Cliff's college track coach convinces him to run a match race against a former rival.
Cliff takes over the house chores while Clair investigates a shady mechanic.
Vanessa struggles when she receives her first disappointing grade in her advanced-placement class.
Theo searches for the culprit who put marijuana in his schoolbook.
Denise's friends show off the latest break-dancing steps while Cliff's buddies demonstrate the jitterbug.
While Cliff is busy in the delivery room, his boss presents Theo with his dad's award as Physician of the Year.
Theo tries to impress a girl by getting his ear pierced without permission.
The children surprise Cliff with unique Father's Day gifts in December.
Clair rushes off to an important job interview, leaving Cliff home to tend to Rudy, who is sick in bed.
Cliff treats overworked Clair to a night at a first-class hotel.
Sondra returns from college and announces plans to spend the summer in Paris.
Denise's boyfriend makes critical comments about the medical and legal professions.
A music teacher (Dizzy Gillespie) helps Vanessa learn how to play the clarinet.
Clair and Cliff are at odds over whether they should have another child.
Cliff's father attempts to convince a reluctant Denise to attend his alma mater.
Theo reluctantly agrees to let Denise make him a copy of an expensive designer shirt.
Seeing novice football-player Theo in action dims Cliff's joy.
Vanessa has recurring nightmares after seeing a horror movie.
Cliff arranges a funeral ceremony for Rudy's deceased goldfish.
Theo brings home a bad report card; Denise dates an older man.