Revealing mistake: Doug has the hologram when inside the alien nuclear reactor, and a bunch of bad guys encircle the holographic image and fire at it at point blank with automatic weapons, and not one bad guy gets hit. If they encircled the 3D image, at least a few bad guys would have been hit by their own men. (01:37:00)
Revealing mistake: When three of the turtles are playing Trivial Pursuit and Leonardo runs in to announce Splinter is alive, you can see a wire coming out of Raphael's shell. I guess it's for the animatronic head, but it's visible. (00:59:30)
Revealing mistake: When the ferret bites Dominic's father, it is a stuffed (dead) ferret. The mouth does not close.
Revealing mistake: When Tom Cruise and his girlfriend are visiting his former arch rival and now good friend, his wife calls Tom "Tom", not by his character's name.
Revealing mistake: In the skywalk scene, when McClane pushes the paint stand on the terrorist, it is quite obvious that they use a dummy when the paint stand falls on the terrorist and crushes him. (00:45:05)
Revealing mistake: At the end, when the train destroys the time machine, right at the moment when it hits you can see a small explosion, which was used to trigger the destruction of the time machine. (01:43:03)
Revealing mistake: In the scene where Mel Gibson and Robert Downey Jr. crash upside down in the jungle, the windshield of the helicopter breaks out. When they release their belts, the windshield is visibly taped back together for them to crash through.
Revealing mistake: When Danny falls down from the ceiling, watch closely and you can see the security wire attached to his leg. (00:34:40)
Revealing mistake: Just before RoboCop gets out of the car to walk towards the baseball coach, Lewis shoots at the coach and he jumps back. Watch carefully. Whilst jumping, his hat comes off slightly and you can see the make-up for the hole in his head, which he doesn't receive for a few seconds after this. Seen best in Slow motion on the DVD. (00:50:31)
Revealing mistake: In the scene where Jack Ryan is brought aboard the U.S.S. Dallas after releasing himself from the helicopter, two crewmen drag him inside. The crewman on the left side of the passage backs into a metal valve, but the valve moves down and left, then snaps back in place as if mounted to a rubber pipe.
Revealing mistake: When Strakk is firing the giant nail gun thing at Darkman during the climax, you can see that the gun firing does not always match the squibs going off on the beams behind Darkman.
Revealing mistake: When Rocky delivers the final uppercut at the end, the punch misses by inches.
Revealing mistake: When Joanne is kneeling by Phil's body, she cries "Oh God no." and then, just before it cuts, Phil's right hand moves, even though he is dead. (00:45:50)
Revealing mistake: When we see the navy seals burst into the factory to rescue the pilots, several of the bad guys get shot. On one of the bad guy's feet who falls back onto a table, there is a rope attached to his foot obviously so he wouldn't fall to far, or not to hurt himself or something. (00:09:50)
Revealing mistake: On the toxic plant, where James runs from the forklift coming out of the garage door, the oil drum containing Carl flips off the forklift. When the oil drum flips, you can easily see the mechanism used for flipping it. (01:17:45)
Revealing mistake: The B17 that crash lands in the beginning appears quite realistic, until during a head on shot when you can see daylight through the clear nose from a window in the back of the plane. This shows it to be model as in the real plane bulkheads would block this from happening.
Revealing mistake: When the Looking Glass plane is chasing Air Force One, you can see the wires holding up the model planes.
Revealing mistake: Steven Seagal visits his friend in Ohio. They are standing in a high school football field and you can clearly see tall palm trees in the background. This same mistake is later repeated in another street scene.
Revealing mistake: A shot of Mel and Goldie on the motorcycle in Michigan is re-used for a shot when they are supposedly in Wisconsin. They are driving along a curving, downsloping road.
Revealing mistake: Outside the courthouse, there is a sudden downpour and the rain is coming almost straight down. Cut to a close-up of Van Damme and the rain is suddenly heavier, coming in at much more of an angle, and it's noticeable that Van Damme is not even getting wet. Cut back to the scene where Amanda is walking away, the rain is now back to being more vertical, is lighter and this shot shows that Van Damme's hair has not been touched by a single drop of rain.