Continuity mistake: Peter walks into the bathroom holding a box of Chinese and a bottle of wine. He puts them down and hugs Sarah. She falls backwards into the bath and now he too is holding a glass of cloudy looking water. (00:08:25)
Continuity mistake: When the man at the wedding (in the gazebo) is shown wearing a money jacket, he removes the outer jacket he is wearing twice.
Continuity mistake: At the end of the dress rehearsal, when the policeman looks around the corner, someone's shirt appears on the armrest of Nathe's chair. (01:01:40)
Continuity mistake: When the bad guys with the high tech weapons shoot down the helicopter, there is a cop standing directly under the helicopter as it is coming down. The guy who plays the cop is clearly an older looking man with no hair on the top and graying hairs on the side. As Shaq (Steel) goes to tackle him to get him out the way, the stuntman for the cop is clearly recognizable, because the stuntman has a full head of black hair and a part on the left side.
Continuity mistake: When Joe goes to quit, it is late afternoon (it is getting dusky). But when he shows up at Ben's house afterwards to tell him that he just quit, it is lighter, like it's the middle of the day.
Continuity mistake: During the scene when Martin and Cray are in the morgue, Cray throws the baseball bat at Martin. When Cray throws it it is upside down but when Martin catches it, it is rightside up. However, you never see the bat flip.
Factual error: There is a chase through the Archives-Navy Memorial station on the Washington, D.C. Metro, but the station looks nothing like the real one and the trains don't look like the trains on the DC Metro.
Continuity mistake: After the dinosaurs are on the island, they see that the path they crossed to get there is gone, so they have no way of getting back. Then when they call their parents a little bit of the path and some rocks (that weren't there before) suddenly reappear. Then when they sail back on the log about half of the path is restored.
Continuity mistake: When Hank Simes reappears in human form, he is wearing a red shirt that materialised with him. But when the blue laser disintegrates him, the shirt falls to the ground.
Continuity mistake: When Rollo is standing next to the lemur cage and waves at the approaching Willa he raises his right arm, but when the camera angle changes we see him lowering his left arm. (00:47:55)
Continuity mistake: In the scene where Madeleine's aunt puts the phot of Madeleine and Freddie in the book, she puts it in so that it cannot really be seen when the book is shut and it is facing backwards. When Madeleine picks up the book, it is facing the other way and is half way out of the book.
Factual error: When D.J. is attacked by Dr. Weir, he is grabbed by the throat and is squeezed until his windpipe is broken, shown by the way he was breathing (or struggling to). When Weir seizes him again and throws him against a support beam, he screams in a way impossible for someone who just had his windpipe crushed.
Suggested correction: Dr. Weir doesn't crush DJ's throat at all. The noises he makes are simply choking noises because he is being picked up by his throat, there isn't even anything in the scene to imply his throat is being crushed, which in reality requires considerably more effort than most people believe.
Revealing mistake: When the car falls off the cliff it has no engine, clearly visible when the hood flies off. (01:12:10)
Continuity mistake: When Joy is packing up to leave for eastern Europe, she's talking to her mom and she has two trolls in her hand, and you can see that the troll with the blue hair is still on the stand. In the next shot, she has the troll with the blue hair in her hand.
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.
Continuity mistake: Costume continuity throughout the whole film. When the female scientist gets changed into khaki pants they are tight fitting, they alternate between tight and baggy throughout.
Continuity mistake: When Mr. Eddie goes back to his Mercedes after beating up the "tailgate guy", the left side of the bumper on the Mercedes is damaged. When they drive back into the garage, we see the left side of the bumper is fine.
Continuity mistake: In the scene where Chyna decides she needs to fall down the stairs to break the chair she's chained to she's supposed to be handcuffed. As she starts to fall and tumbles down her hands are not handcuffed and fling around wildly.
Continuity mistake: When Wynn is talking to Al about the mission to blow up the plant, Wynn puts his cigarette out in the ash tray in the scorpion bowl and there are 4 butts in the ash tray, but a minute later when the camera shows the 2 scorpions fighting, the ash tray has no cigarette butts in it. (00:11:19)
Continuity mistake: In the middle of the hotel fight when Toby and Deliverance go through the door in their hotel room you see the door open and a number of shots impact it. The characters then go through the second of the double doors. This is commented on in the DVD commentary. Not only do the bullets not go through the second door, they don't go through the first. On top of that, you see a shot with the two doors opened, but when the bad guys enter the room the double doors miraculously turn into just one! This layout is then used for the rest of the scene.