Other mistake: After Michael kills Laurie at the beginning, he hands the knife to the inmate with the clown mask. The next kill is the cameraman for which he uses the tripod ends. A few scenes later they show Michael standing holding a knife with fresh blood on it. He hasn't killed anybody with this knife yet so where did the blood come from?
Continuity mistake: When Chris Rock and Anthony Hopkins are being chased through the woods, they crash into a tree near the end of the chase. When it shows the front of the Mercedes Benz crashing, the licence plate is torn from the car. Then in the next shot, the plate is simply dented, but still attached to the car.
Visible crew/equipment: When Monica is in bed with her boyfriend and they get up to dance, the whole film crew is mirrored on the glass of the window.
Factual error: In the DJ spin-off scene, Zach and Francessca help make Meeker cool by going into hypertime and giving him a dance lesson. At one point, we see Zach and Francessca in hypertime making Meeker do flips. Then, in real time, we see that Meeker is doing the flips at the same speed that he was doing in hypertime. Wouldn't he be going a lot faster in real time, not the same speed as he was in hypertime?
Other mistake: In the scene where Ecks is chasing Sever, you see Ecks put a shell into an open chambered shotgun. This means that there is only one shell in the gun. A moment later when he yells stop inside the building he cocks the gun again. Thus, he is holding up Sever without any shells in the gun.
Continuity mistake: In the scene where the townspeople are fleeing to the mall there is a shot of the Deputy driving the car. You can see the top left hand corner of the windshield is covered in green goo, but when you see them parking the windscreen is completely clean. (01:03:35)
Continuity mistake: During the briefing Alexei Vostrikov was receiving from the Generals, he has three stars on his shoulders, but for the most of the rest of the movie he only has two stars on his shoulders.
Continuity mistake: Towards the beginning of the movie, the Bell Atlantic sticker on the phone receiver is faded, but it eventually turns into a brand new sticker. (00:27:30 - 00:31:15)
Continuity mistake: In the split screen scene when Lauren removes Sean's sunglasses, you can see that after the shot pans outward where both are facing each other, they are actually several feet apart. There is no way she could have reached his face from where she is standing. (00:37:01)
Other mistake: Towards the end of the film, after Snipes beats up of a lot of vampires, Whistler throws Blade's sunglasses to him. They show him throw them in one shot, then in the next shot they show Snipes catching them. But look in the background at Whistler, he doesn't have the glasses, but is moving his arm like he is throwing them. The glasses must have been computer animated, and bad editing contributed to this mistake. (01:37:34)
Continuity mistake: When Sy is following Nina and Jake after he put the picture of the husband cheating in with Jake's pictures, the cars pull over to the side of the road. If you watch when they pull over, you see that they pull over next to a down sloping hill that is nicely green with grass and a few sporadic trees. But when they show Sy's car in the rearview mirror, you see that they are now pulled next to a large up sloping hill that is covered in leaves, dirt, and a lot of trees. (00:53:40)
Revealing mistake: When Slim and her daughter are running away from the husband they run onto a bus. When it cuts to the bus driving away you can see that Slim is holding a dummy, which is supposed to be her daughter.
Continuity mistake: When Graham goes into Ray's kitchen you see the vegetables scattered and the knife further on the other side of them. When Graham leans up for the knife, however, it is on the other side of the now grouped vegetables. (00:56:40 - 00:58:10)
Visible crew/equipment: Watch the scene where Frank gets killed. In the last shot of this scene, we see a soldier standing over the dead body. Keep an eye on the right side of the screen as the camera slowly moves away and you should see one of the cameras and a cameraman on the ground next to a large metal object.
Revealing mistake: One of the first times you see Balthazar (Michael Clarke Duncan) you can clearly see the adhesive for the fake scar on his right cheek and that it is coming loose. (00:06:00)
Plot hole: When Ben Affleck is meeting with the man who changes Samuel Jackson's credit record, the man remarks that Samuel Jackson should not have told Ben Affleck that he was in insurance. Samuel Jackson never told Ben Affleck that he was in insurance.
Continuity mistake: When they bring in the car crash victim (future heart donor), the victim is in perfect condition. No blood, broken bones or anything. Pretty good to have been hit by a truck. (01:32:20)
Factual error: When May cuts her eye out with the scissors at the end of the movie, the fake eyeball used for the effect is perfectly round. A human eyeball is far from being perfectly round.
Continuity mistake: At the end of the film, Claire's husband is shot once in the back. However, when we see him from the front, he has TWO exit wounds.
Continuity mistake: At the end of the movie when Owen Wilson stops Eddie Murphy from leaving after they see that Carlos has taken credit for saving the day and is telling him about the hover gel there is a black car outside behind Eddie that people get in and leave, then the car is back, disappears and reappears when the camera is going back and forth from Eddie to Owen.