Chattahoochee is a 1989 American drama film directed by Mick Jackson and starring Gary Oldman and Dennis Hopper. The film is based on the real-life experiences of Chris Calhoun, who met screenwriter James Hicks, who then wrote a script based on his internment in a Florida state mental institution. It was turned down by several major studios before being accepted by Hemdale Film Corporation, a small British-owned, Los Angeles-based company that also produced Platoon, Hoosiers, The Last Emperor, and Salvador.