Mark Rosenthal - Superman IV: The Quest For Peace

Rosenthal recorded a DVD commentary for Superman IV: The Quest for Peace for the Deluxe Edition of the film in 2006. Here he discusses the film's original intentions and deleted scenes. Rosenthal has also described the final film as producer Cannon Films stabbing star Christopher Reeve in the back.

According to Rosenthal, Reeve and director Sidney J. Furie begged Cannon Films to film a sequence in New York in front of the real United Nations Building because filmgoers were very familiar with that location, but the Milton Keynes setting looked more like a municipal auditorium,. However, Cannon refused because they were "pinching pennies at every step".

Rosenthal also revealed that he and writer Lawrence Konner wanted Reeve to play Nuclear Man as well as his dual roles of Superman and Clark Kent in the film. They imagined the villain being a darker version of the hero in the cloning process. This would have been financially expensive and was already explored in minor detail in Superman III. Therefore Cannon decided instead to hire Mark Pillow for the part of Nuclear Man.

Also according to Rosenthal, there are approximately 45 minutes of the film that have not been seen by the public after they were deleted following a failed Southern California test screening. In fact, the Nuclear Man that appears in the film is actually the second Nuclear Man created by Lex Luthor. Cut scenes featured the original Nuclear Man (portrayed by Clive Mantle) engaging Superman in battle outside the Metro Club and being destroyed by the Man of Steel. The first Nuclear Man was somewhat more inhuman-looking than his successor, and resembled vaguely in looks, and significantly in personality, the comic book character Bizarro. Luther postulates that this Nuclear Man was not strong enough, and hatches the plan to create the second Nuclear Man inside the sun as a result.