Scott Richard Grimes (born July 9, 1971) is an American singer, songwriter, actor, and voice artist. Some of his most prominent roles include appearances in ER as Dr. Archie Morris, Party of Five as Will McCorkle, Band of Brothers as Technical Sergeant Donald Malarkey, and the animated sitcom American Dad!, voicing Steve Smith. He is also well known by cult movie fans for his role as Bradley Brown in the first two Critters films.