After the crushing Warsaw Pact Invasion of August 1968, Miloš Forman left his native Czechoslovakia for the United States in order to pursue more creative freedom (Communist authorities banned his 1967 satire The Firemen’s Ball). His second film in America is perhaps one of the most anti-establishment films ever made. Based on Ken Kesey’s novel about a group of patients at a mental institution and the sadistic nurse who torments them, One Flew Over the Cuckoo’s Nest would go on to become only the second film to win the “Big Five” categories at the Academy Awards (Picture, Director, Actor, Actress, Screenplay).