Peter Riegert (born April 11, 1947) is an American actor, screenwriter, and movie director. He is best known for his roles as Donald "Boon" Schoenstein from "Animal House", the fast talking gangster Aldo in "Oscar", the tough Lt. Kellaway in "The Mask", and crooked New Jersey State Assemblyman Ronald Zellman on the HBO original series "The Sopranos", and "Mac" MacIntyre, in "Local Hero".