A look back at Louise Fletcher winning the Best Actress Oscar for her performance in "One Flew Over the Cuckoo's Nest" - 48th Oscars in 1976. | The Academy

Louise Fletcher wins Best Actress for her performance as the cold, sadistic Nurse Mildred Ratched in 'One Flew Over the Cuckoo's Nest.’ The film, which was based on Ken Kesey’s 1962 novel, was nominated for 9 Academy Awards, winning for Best Actor (Jack Nicholson), Best Actress (Louise Fletcher), Directing (Milos Forman), Adapted Screenplay and Best Picture. 'One Flew Over the Cuckoo's Nest’ was the first film in more than four decades to sweep the major categories of Best Picture, Director, Act