Terry O'Quinn's impressive gallery of film and television characters includes many diverse roles. He rose to prominence as the outwardly gentle but actually maniacal master of the house in Joseph Ruben's chilling The Stepfather. Though he went on to play leads in other films like Prisoners of the Sun and The Forgotten One, his weight was more effectively felt in supporting roles such as Howard Hughes in Disney's The Rocketeer.

Other feature film credits include Old School, The X-Files: Fight the Future, Primal Fear, Ghosts of Mississippi, Tombstone, Blind Fury, Young Guns, Black Widow, Heaven's Gate and Places in the Heart.

On television O'Quinn had starring roles in Millennium and Harsh Realm, with recurring roles on The West Wing, Alias and Jag. He has guest starred on Law & Order: Criminal Intent, The X Files and Roswell.

On Broadway O'Quinn appeared in Foxfire and Curse of the Aching Heart, and Off-Broadway in Richard III.