Revealing mistake: When Glenda is killing the mother in the shower towards the beginning of the movie the mother's underwear is visible through the shower curtain.
Visible crew/equipment: As Sam and Rhonda have Fiona's car confiscated, when Fiona runs out shouting, "I can pay for those parking tickets!" the crew's black mat is laid out on the walkway, but in the overhead shot when she tries to run away that mat is gone. (Visible on fullscreen DVD.) (01:28:10)
Continuity mistake: When Hutch tackles Starsky to the ground after his gun goes off in the disco, Starsky's badge falls to the ground beside his head. Hutch grabs it and holds it up, telling people to calm down, but when the shot returns to Starsky the badge is still there next to his head. (00:49:40)
Continuity mistake: When Napoleon is waiting while Rico makes a sale, he checks his watch to see how much time he has before the dance. The first time he checks it, the date on the watch indicates Thursday July 17. When he checks it again a few minutes later, it shows Monday July 21.
Continuity mistake: When Fairy Godmother is throwing the books behind her, the book "Snow White" lands on the other books. "Snow White" noticeably changes position between two shots. (00:41:15)
Continuity mistake: When the guy goes to get in Danielle's car after he strips for her, he opens the door and the window is up; but when he closes the door, the window is down. (00:16:50)
Continuity mistake: When Ron throws the burrito at the biker, you can see from the shot in the car that it falls to the ground. After it falls, the biker swivels for a while, and then slides down the street, however, in the shot of him once he stopped, the burrito was in front of him. (00:48:45)
Continuity mistake: When Ben Stiller goes to the girl's house in the white suit - she slams his head into the wall and a blood/makeup stain shows up...when the camera angle changes the stain is gone. (00:42:05)
Visible crew/equipment: While passing the frat-house bus, in the close-up, as the two girls are about to flash, the reflections of the camera and two crew members moving on the crew's vehicle are visible on the glass window. (00:14:15)
Continuity mistake: When Nora is explaining to her friends at lunch that she and Luther are skipping Christmas, her friend asks her "When do you leave?" without Nora ever mentioning that she and Luther were going on a cruise.
Continuity mistake: In the scene where Mindy is showing Spongebob and Patrick "Planktopolis," it shows a large fully-built statue of Plankton. A few seconds later the right side of the head is shown missing and still being worked on.
Visible crew/equipment: While in the pot field, just as the growers are about to shoot them with the laser sights, you can see a crewmember crawling by in the background. (00:44:50)
Revealing mistake: In the changing room before the Final, Peter leans against a dark wooden pillar several times. It moves on each occasion.
Continuity mistake: Towards the end of the film, Mattie hands Jenna the dream house he made for her 13th birthday. There is hardly any "wishing dust" on the roof. However, when she goes outside and sits on her front porch, there is plenty of wishing dust all over the roof of the toy house now.
Continuity mistake: After the Halloween party, when Cady walks into Damian and Janis' house, Damian gets scared and tosses all of the popcorn out of his bowl. In the next shot of Damian his bowl is full again. (00:29:05)
Continuity mistake: When the four friends are walking to the Vatican, they have their backpacks on. In the next shot they reach the Vatican, but their backpacks are missing. (01:11:35)
Factual error: The scene where Nightfox steals the Faberge Egg is all wrong. A laser security system must have a photoelectric receptor at the other side to detect if somebody pass between the two devices. As shown in the film, the laser beams points everywhere, so the system can't work and somebody could cross a beam without starting the alarm. Even if it was some weird system based on measuring distance it wouldn't work - if the laser hits the floor at an angle it won't bounce back to the source, it will reflect towards the ceiling.
Continuity mistake: There is a scene in which a ghost shoots harpoons through the back door of the Mystery Machine. In the next shot, the harpoons are gone, and when the van gets back into the city you see a shot of the back and there is no damage whatsoever. (01:03:20)
Continuity mistake: After Jill has shot Jimmy she grabs her face crying. When it cuts her hands aren't on her face. (01:28:15)
Other mistake: When Marcus and Kevin reveal their real identities to the crowd, their eye colour changes from blue to brown without any indication that they removed their contact lenses. They simply lift off their masks. (01:38:10)