Peter HortonPeter Horton (born August 20, 1953) is an American actor and director. He played the role of Prof. Gary Shepherd on the popular television series Thirtysomething until 1991.FilmographyAmerican Odyssey (2015)Brimstone (1998)2 Days in the Valley (1996)The Cure (1995)Thirtysomething (1987)Amazon Women on the Moon (1987)Children of the Corn (1984)