Revealing mistake: Mirrors were used to make the corridors appear longer, early in the film when Brett is complaining to Parker about the way they are treated by the company you can see their reflections in the mirror behind them as they walk down the corridor. It's only for a second as they are moving off camera but you can see them in their white overalls.
Revealing mistake: As the gang is being chased through the "96th Street Station", you can see the true station name "Hoyt" (as in Hoyt-Schermerhorn Sts. Station) on the outer station wall. (00:42:50)
Revealing mistake: When Godell is trying to get away from the company's goons, he races to the nuclear plant gate where he'd be safe. As he pulls up to the gate, you can already see the 'donut' skid marks left in the driveway from the goons' car when it turns around. But the car turns around AFTER Godell pulls up to the gate, so the donut must be from a previous take.
Revealing mistake: When the motorcycles are chasing the guy and his girl in the red car, one of the motorcycle riders attacks the car with a machete. He first hits the side of the car, and then goes to hit the windshield. Notice the windshield is already cracked prior to the machete making contact.
Revealing mistake: As Holmes and Watson are riding home from Watson's stay in prison, in the background double traffic lines are visible as are concrete traffic barriers. These are a modern invention and out of place.
Revealing mistake: During the laser battle inside the space station, one of the villains on one of the upper circular tiers makes a move as though to signify he was hit with a laser a second or two before the laser actually hits him.
Revealing mistake: You can see Jackie's knuckles are already bloody BEFORE she starts pounding on the closet door.
Revealing mistake: At the start of the movie it's night and raining, but you do not see any drops of water hitting a surface anywhere although/but things appear to be wet. (00:00:58)
Revealing mistake: When the purser's safe falls through the ceiling, the ceiling metal is far too thin. Bearing in mind also, that the on the other side of the ceiling metal is supposed to be the floor of the next deck up, and that too is a thin flimsy metal, that doesn't even appear that it could support any kind of weight.
Revealing mistake: Despite the heavy snowfall in Siberia, not a single flake falls on the people or clothes, nor is there any ice on them, revealing the snow is just footage matted over the scene.
Revealing mistake: At the end of the movie, when Ben stakes vampire Susan in the heart, she throws her head back in pain and you can see her real teeth behind the fake vampire teeth.