Keith David Williams (born June 4, 1956), better known as Keith David, is an American film, television, and voice actor, and singer. He is perhaps most known for his live-action roles in such films as Crash, There's Something About Mary, Barbershop and Men at Work. He has also had memorable roles in numerous cult favorites, including John Carpenter's films The Thing (as Childs) and They Live (as Armitage), the Riddick films Pitch Black and The Chronicles of Riddick (as the Imam)