Continuity mistake: Before Nuclear Man burns Luthor's dollar bill, Luthor looks to his right, immediately after, the shot from behind shows him looking straight forward.
Continuity mistake: During the volcano scene, a girl is holding on to the priest's arm at wrist level. A split of a second later her grip changes to above the elbow level.
Plot hole: Superman dropping Nuclear Man in the area of a nuclear plant would have made him much stronger, since that is giving him a lot of nuclear energy. Instead he is killed.
Continuity mistake: When the window shops explode, the grey car close to them disappears in the following shot.
Continuity mistake: When Superman rescues Lucy in space she is placed on his right side. A frame later she is on the left.
Continuity mistake: In the hotel suite, the kitchen door is always open, except for the moment when Superman has to look through it, when the door appears magically shut.
Continuity mistake: When Nuclear Man flies through the Daily Planet floors, the last place he breaks into has the exact same decoration as Lex Luthor's penthouse, despite the fact that in previous scenes we saw that Luthor lives in a totally different building.
Continuity mistake: In the beginning of the UN sequence, we see a brief outside shot of the real UN building, but the further shots of the fake building have none of the elements from the shot we just saw: Flags, white stone wall.
Continuity mistake: When Superman is entering the UN, an Arab man greets him and turns his head around from right to left. In the following closer angle he repeats the movement.
Continuity mistake: The SWAT people that are falling off the truck when it gets lifted disappear in the next angle where we see the pavement and a close up of the front of the truck.
Continuity mistake: When the window shops explode, a taxi cab door is widely open to show a Budweiser ad on it. In the following wide angle from above the door is closed.
Revealing mistake: When nuclear Man shoots at the cops, the scene is being played backwards.
Continuity mistake: Nuclear Man watches the Daily Planet paper with the "New publisher for your favourite paper" headline. The first shot shows the paper slightly wrinkled on the left and bent to the right. In the following angle it is straight and perfect.
Continuity mistake: In a split second, all of the snow on the mountain cut by Superman disappears.
Continuity mistake: When Superman saves the falling woman at the Great Wall, he flies in a 1 o'clock direction. A frame later he is positioned in a 12 0'clock.
Continuity mistake: When Superman stops the Soviet spaceship from turning around the solar panel is facing upwards, a second later the spaceship has changed position and the panel is sideways.
Audio problem: When Nuclear Man puts Lenny down on the floor, Lenny babbles some things but his mouth doesn't move.
Continuity mistake: When Superman lands near the UN, Lois and Jimmy disappear from the crowd, only to appear half a second later, in the closer angle.
Continuity mistake: The Soviet missile has legible CCCP red letters, but in the following shot it's covered in snow, although the close-ups don't show any snow falling.
Continuity mistake: Outside the UN, the hot dog in the kid's hand suddenly disappears.
Suggested correction: Dropping nuclear man in to a nuclear power plant isn't as silly as it seems, assuming that the nuclear power is far greater than nuclear man he would simply be absorbed by it rather than growing stronger.
That never got shown and the fact that he was able to make a volcano erupt speaks volumes.
Athletic Jason