Spaceballs is a 1987 American space opera parody film co-written, produced and directed by Mel Brooks. It is primarily a parody of the original Star Wars trilogy, but also parodies other sci-fi films and popular franchises including Star Trek, Alien, The Wizard of Oz, 2001: A Space Odyssey, Planet of the Apes, and Transformers. The film stars Bill Pullman, John Candy and Rick Moranis, with the supporting cast including Daphne Zuniga, Dick Van Patten, George Wyner, Lorene Yarnell, and the voice of Joan Rivers. In addition to Brooks playing a dual role, the film also features Brooks regulars Dom DeLuise and Rudy De Luca in cameo appearances. In Spaceballs, heroic mercenary Lone Starr (Pullman) and his alien sidekick Barf (Candy) rescue Princess Vespa (Zuniga) of Druidia and her droid, Dot Matrix (Yarnell, voiced by Rivers), from being captured by the Spaceballs, led by President Skroob (Brooks), who want to use Vespa as ransom to obtain Druidia's air for their own planet. However, the heroes get stranded on a desert moon, where they encounter the wise Yogurt (also Brooks), who teaches Starr about the metaphysical power known as "the Schwartz". Meanwhile, Spaceball commanders Dark Helmet (Moranis) and Colonel Sandurz (Wyner) lead the search for them, but are hindered by their own incompetence. The film was released by Metro-Goldwyn-Mayer on June 24, 1987. Despite initially getting a mixed reception from critics and audiences, it has since become a cult classic, and is one of Brooks's most popular and well-known films. Plot Planet Spaceball, led by the incompetent President Skroob, has squandered all of its fresh air. Skroob schemes to force King Roland of the neighboring planet Druidia to give them the code to the shield that protects Druidia, allowing them to steal all their air, by kidnapping his daughter Princess Vespa on the day of her arranged marriage to the narcoleptic Prince Valium. Skroob sends the villainous Dark Helmet to complete this task with Spaceball One, an impossibly huge ship commanded by Colonel Sandurz. Before they can arrive, Vespa abandons her wedding and flees the planet in her Mercedes spaceship with her droid of honor, Dot Matrix. Roland contacts mercenary Lone Starr and his "mawg" (half man, half dog) companion Barf, offering a lucrative reward to retrieve Vespa before she is captured. Lone Starr readily accepts, as he is in major debt to gangster Pizza the Hutt. In their Winnebago spaceship, "Eagle