Peter Riegert (born April 11, 1947) is an American actor. He is best known for his roles as Donald "Boon" Schoenstein in Animal House (1978), oil company executive "Mac" MacIntyre in Local Hero (1983), pickle store owner Sam Posner in Crossing Delancey (1988), Lt. Mitch Kellaway in The Mask (1994), and glove manufacturer Lou Levov in American Pastoral (2016). He directed the short film By Courier (2000), for which he was nominated along with producer Ericka Frederick for the Academy Award for Best Live Action Short Film.