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Revealing mistake: When in the prison yard, Luthor's bald cap is hanging loose around his nape.

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Revealing mistake: After saving Jimmy from falling to the dam, during the flying sequence a couple of wires are seen between them.

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Revealing mistake: When Superman holds the plane's engine, the "S" on his shirt is looking the wrong way, revealing the angle was flipped.

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Revealing mistake: On the Golden Gate bridge, the beetle car that skidded a split second before appears totally empty when the van crashes against it.

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Revealing mistake: Before the Hoover Dam breaks, the places where all the cracks and water will later appear are easily traced on the concrete, covered in plaster and painted. Either that, or the real Hoover Dam has burst many many times and always through the same spots.

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Revealing mistake: When Lois falls from the helicopter, the cable holding her is visible.

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Revealing mistake: When Superman leaves the prison, wires holding him are visible.

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Revealing mistake: Fireproof gloves appear on the slave turning the wheel when he's burnt by the dragon.

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Revealing mistake: When Superman lands the burglar, wires holding him are visible for a brief moment.

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Revealing mistake: Under Grand Central, the train that passes by Otis is the same one (5048) that kills the cop.

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Revealing mistake: ***SPOILER*** When Costello is killed, a blood-pack is noticeable under his shirt.

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Revealing mistake: In Grand Central Station, the same extras appear in every scene, no matter where in time or place occurs.

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Revealing mistake: After Superman saves the cat, he takes off and wires holding him are visible.

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Revealing mistake: After jumping in front of the train, Clark runs leaving a white trace behind. Watch the grass on the lower right and you'll see the scene is speeded up.

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

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Revealing mistake: At the chemical plant, while Superman is landing Jimmy Olsen, the crane that holds them in the air casts a shadow on the green truck behind.

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Revealing mistake: When Superman fixes the Pisa tower, there's a wire on the left side, most probably the system to move the prop.

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

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Revealing mistake: When Non and Zod break in through the White House window, a black strap is seen attached to each one's body to help them descend safely.

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Revealing mistake: When Zod throws a man against the wall in East Houston, the man goes through the wall into a truck. Before he crashes against the truck, wires holding him are visible.

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