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Continuity mistake: When Superman first pulls the stack down to use as a slide for the workers, the bottom where it came out of the roof was a dark color. When the people go to slide down, it's all silver colored.

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Revealing mistake: As Superman takes off from the coal mine, there are two dark lines over him. That was an attempt to mask out the wires.

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Other mistake: As Lorelei is held on the wall, there appears to be a chrome ball attached to the belt she has on to give a reference point, and animation was added to complete the scene.

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Revealing mistake: After getting blasted by the big missile, as Superman goes to leave the rock face, the surface flexes, showing it's fake.

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Trivia: As Ross gets ready to fire rockets, the sounds made are those of the old Atari home video game version of Pac-Man.

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Revealing mistake: As Superman takes off from the junkyard, the background can be seen through him.

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Continuity mistake: When Superman takes Clark's glasses, he folds one arm of the glasses in. A moment later, that arm is extended, and he folds both arms and crushes them.

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Question: In the original Superman television series, Superman created a duplicate of himself so that he could be in two places at once. However, as one went to pull the bars out of the wall, he had to have the other help, as the strength of one was half that of the original. That said, how is it that both Clark and Evil Superman have the same strength of the whole being after being split?

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Revealing mistake: After throwing Clark into the compacter, Evil Superman flies to the control booth. As he walks through the door, the background can be seen through him.

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Revealing mistake: As Evil Superman quips to Clark about wanting to fly, as he struggles Clark's left shoulder goes a little transparent, showing his image was superimposed over the stunt actor.

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