Sam O'Steen was an American film editor and director, renowned for his collaborations with director Mike Nichols. His editing work on films like The Graduate (1967), Rosemary's Baby (1968), and Chinatown (1974) earned him critical acclaim and multiple award nominations. O'Steen's precise editing style significantly influenced the pacing and narrative structure of these classic films. He also directed several television movies, including Queen of the Stardust Ballroom (1975), showcasing his versatility in the industry.