Gary Lee Imhoff is an American actor. He was a teacher at Milton Katselas' Beverly Hills Playhouse. Imhoff teaches The Professional Artists Workshop and The Musical Artists Workshop at The Whitmore-Lindley Theatre in North Hollywood, California. Imhoff is probably best known for playing Curtis Estabrook on the TV series Falcon Crest and for providing the voice of Prince Cornelius in the Don Bluth film Thumbelina and Harry Osborn in the 1994 Spider-Man animated TV series. He is a scientologist.