John Keating in Dead Poet’s Society (1989)
Dead Poets Society was nominated for four Academy Awards, including Best Picture and Best Actor for Williams, who toned down his usually manic comic approach in this drama, portraying school teacher Mr. Keating in a traditional and rigid school. Mr. Keating is an unconventional educator who introduces his students to poetry and creates a place where they can truly be themselves. He inspires his students to seize the day and live their lives boldly; but in the end when this philosophy leads to an unexpected tragedy, the headmaster fires Keating, and his students leap to his defense.