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Quotes

Lex Luthor: Lenny, I've always considered you the Dutch Elm disease in my family tree.

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Mistakes

When Nuclear Man arrives on Earth, he enters a shady place which makes him loose his power and cools his body, producing some frozen-like smoke. The next two times that he enters a dark place (inside the elevator and in space) he doesn't produce the smoke. FX budget problems here? See more...

Trivia

Near the end of the film, Superman gives a press conference in front of a bluish mirror-glass building which is meant to be the Daily Planet skyscraper in Metropolis (which we all know is New York, sort of). The shot is framed so you can only see the bottom of the building - necessary as it is only about 3 floors high, and is in fact the railway station in Milton keynes, England, about 400 yards from where I work. Even the crowd have a vaguely British look about them - presumably passers-by were recruited and stood there in their own clothes (this would matter less now - Brits look more American than they did in the Eighties). See more...

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Movie Mistakes blog

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Superman IV: The Quest for Peace (1987) - 9 corrections

Directed by Sidney J. Furie, starring Christopher Reeve, Gene Hackman, Margot Kidder (add more)

Genres: Action, Adventure, Family, Fantasy, Sci-fi

Comments made in brackets are corrections from other visitors. To submit your own corrections for mistakes, just click "edit" under an entry, then choose "correct entry". You can also submit corrections for corrections, if you think a mistake has been unfairly removed.

Mistakes
Trivia
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Quotes
Corrections
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The capes of both Supermen ruffle when they are on the moon - it must be windy up there. [This is not a mistake. The mistake is in thinking that there has to be air or wind present for the capes to "ruffle". The energy to cause the motion in the capes comes from the movement of the bodies they are attached to. Footage of the moonwalks show the American flag appearing to "ruffle" while being planted by Armstrong. It's the exact same effect.]
Edit
In the health club, a barbell is handed to Clark Kent. In keeping with his "weakling" persona, Clark lurches forward from the weight of the barbell and falls on his face. In the next scene, he is getting up from his BACK. [He's handed the weight, he falls forward and out of frame, lets go of the weight when he's out of frame, falls back, then enters into the frame again.]
Edit
When Superman is on the moon and straightens the American flag and Nuclear-Man comes from behind and knocks Superman and the flag down, the next shot shows both men fighting on the ground with the sun shining behind them. If that is the only source of light in the solar system, where is the light coming from in front of them? [From the moon's surface. It's bright. That's why you can see the moon from earth. The same way you can see a person's face even if the sun is behind him.]
Edit Corrected by K.C. Sierra
In the scene when Lex's commission is increased and he decides to take control of the business, when he holds up the bill for nuclear man to burn if you watch carefully you can see that as soon as it catches fire Lex's hand and the bill both disappear. [Pause the movie and advance frame-by-frame. When the bill is set on fire, you can see Lex quickly lower his hand.]
Edit
Just before Superman flies away from the Great Wall Of China in pursuit of the supervillain, he repairs the wall, generating new stones with beams shot from his eyes, a silly power Superman has never had. [Not really. Even in the black-and-white version of Superman with George Reeve, there was an episode where Clark Kent found a ripped up letter in a small garbage bin by his desk. He used this same ability to repair the letter and read what was on it.]
Edit
In the museum, Lex Luthor snips a piece of Superman's hair, which is displayed suspending a 1000 lbs weight. If the hair is strong enough to hold a weight that heavy, how can Lex cut it with an average hedge clipper? [The breaking strain of the hair is over a thousand pounds, but its resistance to cutting could be much lower. Garden shears cut with thousands of pounds pressure per square inch because the edge of the blade is so narrow, and it is entirely possible that they could cut a very strong fibre - even Superman's hair.]
Edit
Since the super-powered villan is a clone of Superman, shouldn't he look like Superman? Lex Luthor never mentioned using anyone else's DNA to create the super villan. The movie makers could have created another image of Christopher Reeve. It was done in the previous Superman movie when Clark Kent is battling with the bad Superman in the auto junk yard. [Lex used some of his own DNA and mixed it in with supermans. This explains the change of look and why Lex Luthor is the voice for the clone.]
Edit
When Nuclear-Man freezes Superman in space, how come it's such a uniquely designed block of ice Superman is encased in? And besides, if Nuclear-Man was created via the sun, how come he can freeze things? He must have been chewing Winterfresh gum at the time. [He could use freeze breath because Superman could and he was created from Superman's DNA.]
Edit
When Superman plants the evil super guy on the far side of the moon in the elevator, the sun eventually shines through to revive him. The problem is that the moon spins on an axis that prevents the dark side from ever seeing the sun. This is why we only ever see a single view of the moon. [We only see one side of the moon because the moon always has the same side turned towards us. The sun however shines on all sides. When it is full moon it is dark on the other side, when it is new moon, the "dark" side of the moon is fully lit.]
Edit