"land of the giants" guest stars included many familiar faces from other 1950s and 1960s sci-fi/fantasy and adventure series (e.g. "", "the twilight zone", "gilligan's island", "lost in space", "i dream of jeannie"). these popular, well-known character actors included jack albertson, chris alcaide, michael ansara, john carradine, yvonne craig, charles drake, alan hale, jr, jonathan harris, david opatoshu, larry pennell, and warren stevens.