18th Sep 2006
Continuity mistake: When the statue of Liberty is about to crash on the street, a close shot is seen of jammed cars and hysterical people. When the shot changes to Superman flying to the rescue, the jam, the cops and the people have disappeared, and all is nice and quiet in Metropolis.
19th Oct 2006
Other mistake: When Clark Kent enters the subway, the set is the same as the rampage later in the film; only that the second time we see this set, the subway entrance has vanished.
10th May 2007
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.
31st Jan 2007
Continuity mistake: When Lacy is about to enter the elevator, a light brown rug has appeared on the floor behind, which disappears in the next wide shots.
16th Oct 2006
Continuity mistake: Nuclear Man lands on a street surrounded by skyscrapers. In the following shots where he destroys everything, the right side of the street is the same, but the left side is totally different: small houses, sunnier, signs on the walls.
17th Oct 2006
Continuity mistake: When Superman and Nuclear Man fight on the balcony the high powered binoculars disappear.
19th Sep 2006
Continuity mistake: The rock that hits the prop-astronaut blows his head off. Seconds later the head is back in place.
15th Sep 2006
Other mistake: Nuclear Man is shown blowing up the Great wall twice, but it's the same shot reversed.
2nd Feb 2007
Other mistake: The same front shot of Superman flying is used over and over and over again.
23rd Nov 2006
Continuity mistake: During the volcano eruption the animal on the right (goat or sheep, I don't know) keeps changing from brown colour to white.
19th Oct 2006
Visible crew/equipment: In the quarry, when the cops' car flies up the air you can see the ramp used to lift it on the lower left side of the screen.
17th Oct 2006
Continuity mistake: The bundle that Superman makes to destroy the weapons changes to a tenth of its size in about a second.
16th Oct 2006
Continuity mistake: The cab's hood, crumpled by Nuclear Man's power beam, magically smoothes itself a frame later.
15th Sep 2006
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.