Based on extensive interviews with producers, screenwriters, cast members, and crew, Superman vs. Hollywood spills the beans on Marlon Brando’s eccentricities; the challenges of making Superman appear to fly; the casting process that at various points had Superman being played by Sylvester Stallone, Neil Diamond, Nicolas Cage, Ashton Kutcher, and even Muhammad Ali; and the Superman movies, fashioned by such maverick filmmakers as Kevin Smith and Tim Burton, that never made it to the screen.