Scott Richard Grimes (born July 9, 1971) is an American actor, voice artist and musician. Some of his most prominent roles are his appearances in ER as Dr. Archie Morris, Party of Five as Will McCorkle, Band of Brothers as Technical Sergeant Donald Malarkey, and the popular animated sitcom American Dad!, voicing Steve Smith. Description above from the Wikipedia article Scott Grimes, licensed under CC-BY-SA, full list of contributors on Wikipedia.