Jack Nicholson famously starred as Randle McMurphy, a rebellious patient who challenges the oppressive Nurse Ratched, in this 1975 drama set in a psychiatric hospital that won the "Big Five" Academy Awards. Name the film.

The film you're thinking of is indeed One Flew Over the Cuckoo's Nest (Review). Released in 1975, this powerful drama stars Jack Nicholson in one of his most iconic roles as Randle McMurphy, a charismatic and rebellious patient who fakes insanity to avoid a prison work detail. His arrival at the Oregon State Hospital's psychiatric ward sparks a fierce battle of wills with the tyrannical Nurse Ratched, played with chilling precision by Louise Fletcher. The film explores themes of conformity, individuality, and the abuse of power within institutional settings, making it a timeless classic.

One Flew Over the Cuckoo's Nest achieved a rare feat in Hollywood history by winning all "Big Five" Academy Awards: Best Picture, Best Director for Miloš Forman, Best Actor for Jack Nicholson, Best Actress for Louise Fletcher, and Best Adapted Screenplay. This accomplishment had only been achieved twice before, by It Happened One Night in 1934 and The Best Years of Our Lives in 1959, and only once since, by The Silence of the Lambs in 1991. The film's critical and commercial success cemented its place in cinematic history and continues to resonate with audiences today due to its compelling characters and profound social commentary.