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 Haru looks through the phone-book, you can see they took a real phone-book and simply glued a strip of paper that had 10 rows of fake names and numbers over a section of it (leaving space to make "Tanley, Martin" stand out). You can also see the name are briefly out of alphabetical order because of this. (And anything seen that is not covered by the strip of paper is a real person's actual address and phone number).
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 Ed and Dexter are in the ventilation shaft, watch when they fall in the trolley thing. If you look carefully you can see Ed's wig hanging on the edge. It's got a good burger hat on it.
Revealing mistake: When the main character has a cigarette in his booth, smoke rises before the cigarette is lit.
Revealing mistake: When Georgie stands up at the roof-top pond, she casts a shadow on the background sunrise.
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 Howard is reading the book about how to "score with babes" his lines are on a piece of paper on the page. You can see this by the different color papers. (00:46:25)
Revealing mistake: When Guido tries to escape camouflaged as a woman and is stopped by the guards the second from right prisoner cannot help laughing. (01:50:10)
Revealing mistake: In the scene where the geoligist's husband calls her from the L.A. airport to say he's going to try to make it home, a strong aftershock collapses the wall that the pay phone is mounted on - as this occurs you can see cables attached to the wall pulling it over.