John Christopher McGinley (born August 3, 1959) is an American actor, author and former comedian. He is most notable for his roles as
Perry Cox in
Scrubs, Bob Slydell in
Office Space, Captain Hendrix in
The Rock, 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, a board member and international spokesperson for the Global Down Syndrome Foundation, and a spokesperson for the
National Down Syndrome Society.