Visible crew/equipment: When the girl falls to the ground in the warehouse, the safety mat she falls on is visible.
Other mistake: When Joe Clark first comes to Eastside High as principal, he takes it upon himself to confront the staff. At one point, as he begins to turn his back, watch his lips. His mouth does not match the words being spoken.
Continuity mistake: During a car chase, the "killer" is rushing a little girl to the hospital. As they pass the sign, it reads (in English) "Scared Heart Hospital" - instead of "Sacred".
Revealing mistake: Watch Andy Garcia's decapitation scene. His head starts to come off before the sword makes contact with his neck. Slow motion helps but is not required.
Continuity mistake: In the race for King of the Mountain, Anthony wipes out and begins cursing. Then, in the next shot, he has to spit out some snow before he can curse again.
Continuity mistake: During the "exciting" conclusion, Investigator Natsuo runs toward the villain's vehicle, jumps, and kicks through the windshield. Besides the fact that there are some poor special effects at work, watch this quick shot closely. As he is flying through the air in that split second, the villain's car changes colour! It is quite obvious, as the car goes from a dark red color to dull grey.
Revealing mistake: At the end of the movie when they reach the surface, you can see that the horizon is nothing but a big wall with the sky painted on it. You can see the water splashing up against the wall.
Continuity mistake: When Lurleen changes lanes to pass the Ferrari, the lane change isn't reversed when Lea sees it in the Ferrari's rearview.
Revealing mistake: When Kurt is loading his brother into the van on the stretcher after the fight when he has just been paralyzed his feet are sticking out, but when the door is being shut he pulls them in.
Continuity mistake: When Patrick Swazee's brother is in the van and is being chased by the guys trying to steal the van, the guys place a blue light on the roof of the car. The first shot of the car the light is on the passenger side. In all the rest of the shots, the light is on the driver's side of the car.
Factual error: When Sylvester Stallone is being thrown in a cell for 6 weeks (in his underpants only), he got out of it (after 6 weeks) freshly shaved.
Continuity mistake: Near the beginning Rutger Hauer cuts off a police officer's hand with his sword, for a split second afterwards you can see the officer turning away with both hands clearly intact. The scene happens right after the young kid's mother is killed.
Character mistake: When Eric Roberts' character receives his letter at the start of the film it says "congradulations." instead of congratulations.
Continuity mistake: When Banner changes into Hulk in the subway station, his beard is gone. When Banner changes back after his "Hulk-out" his beard is back. (00:16:00 - 00:18:00)
Plot hole: They seem to break a lot of rules in the main event between Mimi Lesseos and Jan Mackenzie's. They brawl outside the ring long enough to be counted out, choke outs on the ropes long enough to be disqualified are some examples.
Factual error: After the passenger door gets ripped off the Oldsmobile Toronado, a female voice is heard repeating that the "passenger door is ajar." While the Toronado was available with an optional Voice Alert system, the GM system used a male voice.
Revealing mistake: In the scene at the graveyard, after the Warlock assembles the Grand Grimoire and commands it to say God's true name, the fake headstone behind him starts to fall over. (01:33:02)
Suggested correction: Other headstones can be seen falling before this scene.
Continuity mistake: When Fuller falls to his death, the mannequin used as his stand-in gets decapitated on its way down. It even makes a loud noise. When Fuller lands, however, his head is still on his shoulders.
Continuity mistake: The box of Marlboro cigarettes next to Buster's [Kiefer Sutherland] left hand did not have a lighter on top of it, but there was a lighter atop the pack after an angle shift. Buster was holding a newspaper with his left hand and had a cigarette in his right, so the lighter just suddenly appeared. Seconds later, the lighter was gone. (00:04:34 - 00:05:02)
Continuity mistake: When Lucas visits Meg at the juvenile home, he carries a stuffed toy monkey by the leg. When the camera angle changes, he is holding the monkey by the neck. (01:08:15)