Continuity mistake: When Tracy is tied up in the basement, the rope around his body changes styles between shots.
Continuity mistake: In the car chase near the start, the blue and white cars hit bumper to door. When the tank type car hits them they are end to end. (00:22:00)
Revealing mistake: When Jack is hanging out of the truck you can see him standing on the hood of the car which Lydia is driving. At some points we get camera view from the back seat of the car. In some angles the mirror inside the car disappear. This is to prevent us from seeing the camera. (01:04:15)
Visible crew/equipment: At the very beginning after the white van hits Matt, there is a crew member behind a hay stack. (00:05:50)
Continuity mistake: After arriving at 5 Pointz, someone tries to find the combination for the safe and it is revealed to have had a green handkerchief attached to the rear end. Dylan then pulls on the handkerchief and keeps pulling on it to reveal more coloured handkerchiefs until it stops and a timer is heard ticking. When the clicking sound is heard, Dylan is shown holding onto the knot between a purple handkerchief and a blue handkerchief. The shot then cuts to Agent Cowan saying "What is this?", but when the shot cuts back to Dylan, he is suddenly holding the knot between a blue handkerchief and a yellow handkerchief. Then in the next shot, his entire hand is held onto the blue handkerchief. (01:33:25)
Continuity mistake: After Inspector Todd is shot, Axel chases after De Wald and fires at the truck. When the guy at the back of the truck is shooting at Axel, we see multiple bullet holes near the truck's back right window, but in his close-ups the bullet holes are gone. The window frame's scratched paint differs as well in the close-ups. We know it's the same window because we also see him in the shot of the truck's interior.
Continuity mistake: When the "I LUV YOU" picture is viewed in Nordberg's hospital room, the photo has a vertical/portrait orientation. When Frank shows the picture to Jane, the photo has a horizontal/landscape orientation. (00:12:50 - 00:38:25)
Continuity mistake: Frank and Tony are talking with Flo and Tony is holding a bong. Through most of the scene, the bong is in Tony's right hand. But in several shots, it switches to his left hand. In one part in fact showing a side angle, Tony has the bong in his left hand and holding it on his leg. It then cuts to a close up and Tony points to Frank with the same but now empty hand. (00:05:40)
Continuity mistake: In the basement of the Orpheum theater, Holmes takes a lamp off of a wall and places it on the floor. The shot cuts, and the lamp is back on the wall. When the shot cuts again, the lamp is back on the floor. (01:29:25 - 01:30:45)
Continuity mistake: The blood on Marv's chin appears and disappears when he's being interrogated by Wendy and the girls.
Continuity mistake: While singing in a duet with Miss Piggy, Céline Dion is wearing a dress with a strap over her right shoulder. Near the end of the song, the strap is suddenly on her left shoulder.
Visible crew/equipment: In the drive-in shootout scene, the camera and crew are visible in the rear view mirror in the cab of the white Dodge pickup fleeing De Niro and Kilmer.
Continuity mistake: When Diamond Dog puts the hat on in the plane after it's hijacked, he puts it on backwards.A second later, it's on straight without him turning it around. (00:43:55)
Visible crew/equipment: After Phil drives the truck off the cliff, and it explodes in a burst of flames, there is a shot of Andie MacDowell and Chris Elliot staring in shock at the disaster. The two actors are bathed in an orange glow supposedly coming from the flaming wreckage. But in the lens of the TV camera Elliot is holding, there is a noticeable reflection of the lighting equipment used to create the glow effect on the actors. (01:04:15)
Continuity mistake: The chain with which El and Carolina are linked together gets cut open with a welding torch. When the chain falls down on the ground it's intact again. (00:34:50)
Continuity mistake: When Alan and Doug the drug dealer are suggesting more accurate names for roofies, Doug places one hand on his hip with the other down by his side, but in the next shot, both hands are resting on his stomach. (01:21:30)
Revealing mistake: When Bruce Wayne is heading to the hearing at the courthouse, he checks his revolver to make sure it's loaded. His intent is to execute Joe Chill for killing his parents, so he would need a working gun. But when he opens the cylinder of the revolver to make sure it's loaded, you can see that all of the bullets have had the primer removed (the end of each bullet casing has a hole in it.) This is done to make each round impossible to fire, for safety on the set. (00:22:55)
Revealing mistake: The stunt double's hairline is quite different than the actor's, when Bud White holds him over the balcony. (01:53:40)
Revealing mistake: When Jill and Cynthia meet by the water towards the end, Jill produces her gun and is told to throw it in. As she's holding it you can see the base of the grip and there's no magazine in it - hardly the most effective weapon... (01:26:45)
Continuity mistake: In the final scene where Roxie and Velma are dancing in the concert hall, Roxie is on the right and Velma is on the left. They then turn around, and from behind (same point of view as before) they're suddenly the other way around. (01:44:20)