Bush's film work includes notable appearances in "The Savage Seven" (1968), "Five Easy Pieces" (1970), "Monte Walsh" (1970), "The Jesus Trip" (1971), "The Organization" (1971), "Welcome Home, Soldier Boys" (1972), "The Culpepper Cattle Co." (1972), "40 Carats" (1973), "Electra Glide in Blue" (1973) where his performance caused some critics to characterize his screen persona as "irrepressibly unique"; "Alice Doesn't Live Here Anymore" (1974), "Mackintosh and T.J." (1975), "The Call of the Wild" (1976), "The Beasts Are on the Streets" (1978), "The Jericho Mile" (1979), "Tom Horn" (1980), "The River" (1984), "The Hitcher" (1986), "Critters" (1986), "Rampage" (1987) and "" (1993).