Answer
Brad Dourif made his debut in the 1975 film One Flew Over The Cuckoo's Nest. The film was directed by Miloš Forman and starred Jack Nicholson, Louise Fletcher, and Danny DeVito. It is based on the 1962 novel of the same name by Ken Kesey. The film tells the story of Randle Patrick McMurphy (Nicholson), a criminal who feigns insanity in order to be transferred to a mental hospital.