William Atherton

William Atherton (born William Atherton Knight; July 30, 1947) is an American movie, stage and television actor. He is known for his roles as Richard "Dick" Thornburg in "Die Hard" and in "Die Hard 2" and as Walter Peck in "Ghostbusters". 
Atherton was born on July 30, 1947 in Orange, Connecticut. He studied acting at the Drama School at Carnegie Tech and graduated from Carnegie-Mellon University in 1969.