One Flew Over the Cuckoo's Nest won an Academy Award.
One Flew Over the Cuckoo's Nest (film) . The film was the second to win all five major Academy Awards ( Best Picture , Actor in Lead Role , Actress in Lead Role , Director , and Screenplay ) following It Happened One Night in 1934 , an accomplishment not repeated until 1991 by The Silence of the Lambs .