Continuity mistake: Clark grabs the crystal with both hands, and slowly starts retrieving his left hand. When the shot changes, his left arm is in a totally different position. (01:12:15)
Continuity mistake: The driver of the SWAT van disappears when the van is standing upright. (01:14:00)
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)
Continuity mistake: Nuclear Man dents the floor with his footsteps, but in a wider angle the floor is intact.
Continuity mistake: Two firemen are seen away from their truck, but when the angle changes six firemen have appeared seemingly from nowhere.
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.
Continuity mistake: When Superman is walking with the kid towards the UN, they pass by a fire hydrant and one can see the street ahead is empty. A shot later another hydrant suddenly appears.
Suggested correction: The fire hydrant in question is actually two. The one they first pass is slightly faded with chipped paint. The next shot you see a different one that is fully painted red. The next shot shows the crowd passing the first hydrant seen.
Continuity mistake: The shape and size of the volcano is totally different between the moment when Nuclear Man enters it, to when it erupts.
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.
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.
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.
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.
Continuity mistake: When Nuclear Man buries Superman, there's a huge rock near the hole. When Superman comes out, the rock has disappeared.
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.
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.
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.
Continuity mistake: The close shot of the Great Wall exploding shows an edgy architecture, with straight lines. The wide shots show a curvy construction.
Continuity mistake: After Superman lets go off 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.
Continuity mistake: A couple walks behind the hot dog stand in the same direction twice in less than half a second.
