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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 in a Florida state mental institution. Calhoun later met James Hicks who wrote the script. 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.