Bridge On The River Kwai
David Lean had directed eleven films before launching this magnum opus onto movie screens, and it's frequently and justifiably named as one of the greatest films of all time. While William Holden had the top billing, by and large, this movie is Alec Guinness, then all of 38 years old, and in all his long pre-Obi-wan glory and talent, which is considerable. With Jack Hawkins (who convinced Guinness to take his part), Sessue Hayakawa, and James Donald, and written for the screen by two then-blacklisted screenwriters, Carl Foreman and Michael Wilson, both rightfully given their Best Adapted Screenplay Oscars - posthumously - in 1984.
Best Picture, Best Director, Best Actor (Guinness), Best Adapted Screenplay, Best Music, Best Film Editing, Best Cinematography