Forbidden Planet (1956, 98m, MGM) Starring Anne Francis, Walter Pidgeon, Leslie Neilsen, Earl Holliman, and in his debut, Robbie the Robot . Space explorers land on a planet, meet a scientist and his daughter, and battle with "The Creature from the Id" -- the greatest cartoon monster of all time (the rest of the movie was live-action). Based, believe it or not, on William Shakespeare's play The Tempest.