But this blockbuster clash of comic book titans might never have happened if not for the success of Richard Donner’s Superman: The Movie (1978). Richard Donner accepted the Superman directing job while on the toilet. The original Superman script was 500 pages long ... and Richard Donner hated it. Decades later, Donner’s previously shot footage for the film was restored and re-edited into Superman II: The Richard Donner Cut, and previously unused footage of Brando as Jor-El was incorporated into Bryan Singer’s sequel to Superman II, Superman Returns (2006). Additional Sources:You Will Believe: The Cinematic Saga of Superman (2006)Taking Flight: The Development of Superman (2001)Making Superman: Filming The Legend (2001)This story has been updated for 2020.