Revealing mistake: When Franklin leaps out of the helicopter into the water, there is a shot from above that we see he is about to hit the water. To the left of him in the water you can see the water being split by a helicopter close to the water. The waves wouldn't have been created from the helicopter he just jumped out of because, a)The helicopter was too high up to make that sort of marking in the water and b)The waves are being made to the left of the helicopter. If it was the helicopter Franklin jumped from the markings on the water would have be directly below him or below the helicopter.
Revealing mistake: As Bobby drives along the dirt roads at the start of the film, in one shot when the camera is filming inside the car, you can clearly see the gear is in park position yet the car is "driving." (00:01:55)
Revealing mistake: When Quinn is ambushed at his home one shot shows the female caretaker lob a grenade at him before he kills her. It falls to the pool. However, when it explodes, you can see that the explosion is above ground. A further shot shows the pool exploding after that.
Revealing mistake: When Seaborn Legend hits the Eindhoven Lion, some of the sparks come from places that are not making contact. (01:30:00)
Revealing mistake: Although the revelers in Dallas are celebrating the 4th of July, it's very obvious by the characters' clothing that the film was shot during cold weather.
Revealing mistake: When the killer is dragging the girl's body with the meat hook, you can easily see that it is a doll. (01:18:45)
Revealing mistake: When the Cyborg Master enters the police station, he shoots two police women before a third cop starts shooting back with a shotgun. The third shot he fires hits the wall behind the cyborg, and the entire wall wobbles as the squib goes off to make the hole in the wall.
Revealing mistake: When the partner-cop of Harrison Ford is killed there is shortly a scene where the dead guy is on the "table" at the hospital/morgue and you can see his jugular throbbing.
Revealing mistake: When the fireman goes to enter the fire truck that is on its side to rescue his friend, for whatever reason, the filmmakers sped up the film during his entry into the truck, it looks really out of place. (00:40:30)
Revealing mistake: When Jude Law needs to pull himself up the flight of stairs to reach the intercom, you can see him use his hips, despite the fact that he is paralyzed from the waist down.
Revealing mistake: When the car falls off the cliff it has no engine, clearly visible when the hood flies off. (01:12:10)
Revealing mistake: When Oz goes to hack into the Scream 2 website, the exact same footage of him inserting the "custom" disk is used when he hacks into the security system - same red light, same angle, even same PC tower.
Revealing mistake: When Nick is being followed by the PI, several times Nick's speedometer is seen to be at zero. (00:58:40)
Revealing mistake: After Bill Murray breaks through the door with a hammer at Lori's house and says "Here's Johnny", he kicks the door open. On the back of the door you can see white tape, showing where to hit it.
Revealing mistake: In the scene at the end, at the Newberry house, where Blank and Grocer meet in the kitchen, you can see that Blanks weapon is empty but he keeps shooting with it. It goes empty when he reaches over the counter to shoot at Grocer, but he still manages to shoot the two persons coming in through the door from the garden afterwards without reloading.
Revealing mistake: When the main character has a cigarette in his booth, smoke rises before the cigarette is lit.
Revealing mistake: When the needle is set in the pool of water in a stump to act as a compass the pool has been carved out with a chain saw very recently and clumps of the wrong moss set around the rim like it belonged there.
Revealing mistake: When Gere is trapped in the police car and the assassin attempts to shoot him, he fires several shots into the window at Gere's head and every single shot misses yet they do not strike his lawyer or the other window. Where exactly did the bullets go?
Suggested correction: They do hit the window. You can see the bullet holes in the glass from a later camera angle.
Revealing mistake: In the scene where Sam Neill has set the bomb to blow up the rescue ship, Laurence Fishburne comes running up to the sealed door of the Event Horizon whereupon it shakes back and forth like a stage door would.
Revealing mistake: When Earl crashes his Explorer through the police barricade, his car hardly gets any damage, proving the barricade is far more lightweight than a real one.