During the series' five-season run, many actors familiar to viewers, or who later became famous for their subsequent works, made appearances on the series, including but not limited to: future "Falcon Crest" and "Castle" co-star Susan Sullivan in the original pilot; Brett Cullen, also of "Falcon Crest"; Kim Cattrall, of "Sex and the City" fame; Ray Walston, co-star of Bixby's first series, "My Favorite Martian"; Brandon Cruz, co-star of "The Courtship of Eddie's Father"; Lou Ferrigno, who along with starring as the Hulk, appeared in one episode ("King of the Beach") as a different character, Bixby's ex-wife Brenda Benet; and in an uncredited role, the bodybuilder and professional wrestler Ric Drasin played the half-transformed Hulk in "Prometheus" (parts 1 and 2).