John C McGinley
John Christopher McGinley (born August 3, 1959) is an American actor. He is most notable for his roles as Perry Cox (Percival Ulysses Cox) in Scrubs, Bob Slydell in Office Space, Sergeant Red O'Neill in Oliver Stone's Platoon and Marv in Stone's Wall Street. He has also written and produced for television and film. Apart from acting, McGinley is also an author and a spokesperson for the National Down Syndrome Society.