Continuity: There must be a barber's shop or a cosmetics shop somewhere in the Phantom Zone. At the beginning of the first Superman film General Zod's hair looks as if it has been blow-dried, but all through Superman II he looks like he uses wet-look gel.

Plot hole: Before the trio crashed into the Daily Planet (just before the battle with Supes), they were heard flying outside the building. For 3 superbeings with the ability to fly unaided, they sure sound heckuva lot like jet-propelled aircrafts. Jet aircrafts are noisy because of their engines, but superpeople?

Continuity: In the opening scene where the three villains destroy the energy crystal and the lights go dark and the rings descend upon them, the light that surrounds them is shown coming down from the ceiling. But, when the dome opens, the light surrounding them shines up from the floor. (As also seen in Superman: The Movie.)

Revealing: The shot of people walking on the street by the Daily Planet is the same one used in Superman I.

Revealing: After Superman saves the kid at Niagara Falls, he lands on a lawn nearby. Then wires holding him are visible.

Continuity: While Superman is crushing Zod's hand, there's a close-up of Non watching the scene in awe. In the following shot, Non's expression has changed to normal.

Revealing: Wires holding Superman are seen when he lands on the island to pick up fruit.

Continuity: When Superman starts playing hide and seek with the villains, he stands away from the icicles. When Ursa shows up a frame later, he's leaning against them.

Revealing: The fire that comes out of the flame throwers moves at a slow speed though the scene is developing at normal speed.

Continuity: When Clark is laying beat up on the diner floor, a man in a brown suit next to him disappears.

Revealing: When Zod is thrown by Superman and passes by Luthor, the stand in is a guy with fluffy hair who looks nothing like Lex.

Visible crew/equipment: In the ice cave, Superman throws a plastic S at Non. The wires moving it are visible.

Continuity: Before the villains arrive at the Daily Planet, Lois's hair is fluffy and her fringe has a straight cut. When the scene ends, her hair is shorter, and her fringe has some stylish cuts.

Continuity: Superman stands on a flag pole outside one of the windows in Perry's office to defy the 3 villains. When the shot cuts to an outside view of the villains flying, the flag pole has disappeared, and the nearest one is several feet to the left.

Continuity: When Clark and Lois land inside the ice cave, the wires holding her are visible.

Continuity: When Lois is falling on the elevator, the camera angle cuts between her reactions and the ground coming up quickly. When Superman arrives to save her, there is suddenly a LOT more distance from the elevator to the ground than there was just a moment before.

Plot hole: After Clark Kent learns about Zod in the diner and after he was beaten up by that guy in the diner, he realizes that he must get his powers back. So, he walks all the way from the diner to the Fortress of Solitude, a distance of several thousand miles. With no food, no water, no transportation, no money, and just a coat, he manages to walk through miles of snow, ice, and freezing cold to get to the Fortress of Solitude. How does he do this? I don't think any human being could pull this off, and at this stage that's just what he is.

Other: When Ursa, Non and Zod first arrive on earth, watch out for the horrible lipstick marks on Ursa's teeth as they walk away from the lake.

Continuity: The corner in the Fortress of Solitude that exploded looks totally different when we see it at the end of the film.

Plot hole: Lois and a friend of hers are watching Non and Superman fight. But this is totally senseless, because Superman had been flying around Metropolis and chances are slim that he appears in the very same spot to let Lois watch him. And, second and most important, should any doubts arise, the panning angles of the camera never show Lois's building, with the big broken window and the flag poles.