Sam Rockwell is an American actor known for his leading roles in Lawn Dogs, Confessions of a Dangerous Mind, Matchstick Men, The Hitchhiker's Guide to the Galaxy, Choke, Moon and Seven Psychopaths, as well as for his supporting roles in The Green Mile, Galaxy Quest, The Assassination of Jesse James by the Coward Robert Ford, Frost/Nixon, Conviction, Iron Man 2, Cowboys & Aliens and The Way, Way Back.