Mel Brooks timed his science fiction spoof Spaceballs perfectly. The most recent Star Wars movie had hit just four years earlier, and Star Trek was so popular that it was months away from returning to television with a whole new cast. Brooks crammed every inch of the frame with gags, mocking everything from Alien to Planet of the Apes and even The Wizard of Oz. The brilliant casts included Rick Moranis, John Candy, Bill Pullman and Brooks himself in the dual role as Yogurt and President Skroob. It grossed $38.1 million and has become an enormous cult classic. Rumors have swirled for years about a sequel, but it has yet to materialize.