Superman IV: The Quest for Peace (1987)

Continuity mistake: The driver of the SWAT van disappears when the van is standing upright. (01:14:00)

Sacha

Continuity mistake: When Superman is giving his speech outside the Daily Planet, the background is a clear blue sky. In every other shot of Superman, the sky has gone all cloudy. (01:23:45)

Continuity mistake: After lifting the car, for unknown reasons Superman has a visible dark blue bracelet on his right arm. (01:24:55)

Sacha

Continuity mistake: Nuclear Man dents the floor with his footsteps, but in a wider angle the floor is intact.

Sacha

Continuity mistake: When Nuclear Man arrives on Earth, he enters a shady place which makes him lose 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.

Sacha

Continuity mistake: Two firemen are seen away from their truck, but when the angle changes six firemen have appeared seemingly from nowhere.

Sacha

Continuity mistake: Whenever there is a shot of Superman flying taken from directly in front of him, against a blue screen (watch out for the oh-so-visible black outline and loss of colour), it's always the exact same shot. Obviously the producers could only get one day with the blue screen, then.

Continuity mistake: The shape and size of the volcano is totally different between the moment when Nuclear Man enters it, to when it erupts.

Sacha

Continuity mistake: After Superman straightens the US flag, a brief shot shows he is on a plain ground, but when he is knocked down by Nuclear Man, a big mount appears in front of him.

Sacha

Continuity mistake: When Superman is walking with the kid towards the UN, they pass by a fire hydrant. In the immediate wide angle of the place the hydrant is gone, but reappears in the following shot a couple meters ahead of Superman.

Sacha

Continuity mistake: When Lacy is in outer space grabbed by Nuclear Man, she slides down dramatically and grabs on his wrist. Half a second later, the sliding effect is gone and she is now floating relaxed, grabbing the upper part of his arm.

Sacha

Continuity mistake: Mr. Warfield asks the little boy to repeat "I wish Superman had said yes" and places his hand on the kid's shoulder. The shot changes inmediately to a close-up and the arm and hand are gone.

Sacha

Continuity mistake: While the people in the village are watching the lava flow down the streets, the first shot shows them to the right of a wooden door. A frame later they are positioned several feet further, close to a big green plant.

Sacha

Continuity mistake: When Nuclear Man buries Superman, there's a huge rock near the hole. When Superman comes out, the rock has disappeared.

Sacha

Continuity mistake: When in the subway, Superman is standing by a 6 foot poster of the Statue of Liberty. When the shot changes to a flying Superman, he is a third of his size and the poster is huge.

Sacha

Continuity mistake: Behind where Nuclear Man lands there's no school bus on the wide shot, which is a matte painting, but a frame later one appears and stays there for the rest of the scene.

Sacha

Continuity mistake: Clark enters the barn to fiddle with his green crystal. When he exits, a huge amount of stuff from his childhood has magically appeared around the place.

Sacha

Continuity mistake: The close shot of the Great Wall exploding shows an edgy architecture, with straight lines. The wide shots show a curvy construction.

Sacha

Continuity mistake: After Superman lets go of the elevator on the surface of the moon, the cables fall down with the elevator, but in the close-up the cables are up and fall down again.

Sacha

Continuity mistake: A couple walks behind the hot dog stand in the same direction twice in less than half a second.

Sacha