Sam Rockwell (born November 5, 1968) is an American actor. He became well known for his leading roles in Lawn Dogs (1997), Confessions of a Dangerous Mind (2002), Matchstick Men (2003), The Hitchhiker's Guide to the Galaxy (2005), Moon (2009), Seven Psychopaths (2012), Mr. Right (2015), and Richard Jewell (2019). He has also played supporting roles in The Green Mile (1999), Galaxy Quest (1999), Frost/Nixon (2008), Iron Man 2 (2010), Conviction (2010), and The Way, Way Back (2013). He is also renowned for his portrayal of "Head Thug" in Teenage Mutant Ninja Turtles (1990). In 2017, Rockwell's performance as a troubled police officer in the crime film Three Billboards Outside Ebbing, Missouri won him the Academy Award for Best Supporting Actor. He was nominated in the same category the following year for his portrayal of George W. Bush in the political satire Vice. In 2019, he portrayed Bob Fosse in the FX biographical miniseries Fosse/Verdon, earning him a nomination for the Primetime Emmy Award for Outstanding Lead Actor in a Limited Series.