One Flew Over the Cuckoo's Nest is a 1975 American comedy-drama film directed by Miloš Forman, based on the 1962 novel One Flew Over the Cuckoo's Nest by Ken Kesey and the play version adapted from the novel by Dale Wasserman. The film stars Jack Nicholson as Randle McMurphy, a new patient at a mental institution, and features a supporting cast of Louise Fletcher, William Redfield, Will Sampson, Sydney Lassick, Brad Dourif, Danny DeVito and Christopher Lloyd in his film debut.