From Wikipedia, the free encyclopedia. Edmond O'Brien (September 10, 1915 – May 9, 1985) was an Academy Award-winning American film actor who is perhaps best remembered for his role in D.O.A. (1950). His many memorable films included The Killers, White Heat, The Man Who Shot Liberty Valance and The Wild Bunch. He also co-starred with Richard Rust in the NBC legal drama Sam Benedict, which aired during the 1962-1963 television season. Description above from the Wikipedia article Edmond O'Brien, licensed under CC-BY-SA, full list of contributors on Wikipedia.