Continuity mistake: After the "car chase" the white car gets put in the barn. When the black car arrives it is covered in mud (so much they have to wipe it off the windscreen) from the dirt track. The white car only has a few specks of dirt.
Continuity mistake: In the classroom scene as Paulie defends Tori, who has been called up in front of the class to complete a math problem on the board, Paulie begins to write out the equation on the right side of the board in one shot. In the next shot, her calculations are completely different and figured on the left side instead.
Continuity mistake: Brubaker slides home head first. When he is coming to the dugout, he gives his team mates high-fives. It can be clearly seen that the front of his uniform is clean and spotless.
Factual error: During the first scenes of the film the Greek flag used is the current one, and not the one used at that time. The flag that should have been used is a white cross on blue.
Continuity mistake: During the sunscreen scene, Sam has a spot of sunscreen on his left cheek that appears and disappears between shots.
Continuity mistake: At the end of the movie when Steve and Anna are in the boat going across the harbour, in the background is a Shell petrol station on the shore. The boat is travelling from left to right across the screen, but as the camera shots change from Steve to Anna, or both at once, the Shell sign keeps changing its relative position to the boat.
Other mistake: In the beginning, the girls arrive at the airport in Chicago and you can see a billboard in the background. Then the credits roll and they land in the sunny Bahamas and as they are driving away in the limo, the same billboard can be seen in the background. Guess they were on a tight budget and had to computer generate the snow over a scene filmed in the Bahamas.
Revealing mistake: When Jessica and Helen are arguing outside the dress shop, there are 2 girls crossing the street in the background who blatantly stop to watch the scene.
Continuity mistake: When Shaun and Charlie are running from the police, they hide behind a dumpster until a cop car goes by and then Charlie leads Shaun to a meat truck. He opens the back and lifts up the door just far enough so that Shaun can get in. In the next shot, when Charlie is getting in, the door is much higher up, about four feet higher actually, than it was a mere second ago, and there was no sound indicating that Charlie pushed it up further.
Continuity mistake: In the scene at the little bar Bruce Willis kicks Billy Bob Thornton's chair over. Kate Blanchett picks Billy Bob up and tries to dance with him. A different angle shows Bruce Willis still at the table and the Billy Bob's chair is now upright.
Continuity mistake: At the slam dunk contest, after O completes his dunk, there is glass all over the court. When the kid comes to get the ball, you can see that all the glass is cleaned up and there again right before O throws the ball. (01:02:06)
Continuity mistake: Towards the end of the movie during the play, Kelly goes backstage during intermission, and her hairstyle and color has changed. (According to DVD commentary, it was a pick-up scene and she had already started filming Spider-Man. That's why her hair was now red. Still a mistake, but there's the explanation.)
Factual error: Philip uses his left hand to sign the decree declaring Joan officially crazy. No one in the 15th century would have used his left hand to write, as 1) it was considered the wrong hand to write with and 2) writing with the left hand would have smudged the fresh ink and rendered any document unreadable.
Continuity mistake: The image of "Che" Guevara hanging from the rear-view mirror keeps appearing and disappearing during the first part of the road trip, right before it is substituted by the toy rabbit Luisa buys at the township.
Continuity mistake: In the scene where Rock is trying to destroy Tima and the factory, the side parting in his hair frequently changes sides.
Continuity mistake: When Chesney meets Kelly in the cafe, Kelly drinks Coke from a can. When Chesney spills the drinks, Kelly's Coke is in a glass and the can has disappeared.
Continuity mistake: When Tony and Keith are playing dominoes, Tony picks up the ones in front of him and then they are back on the table as the camera angle changes from each guy talking.
Visible crew/equipment: When Jimmy is first in his movie bubble, he turns the corner in his room and sees the stairs. As he turns the corner a crewmember's head is visible for a moment then he crouches.
Plot hole: When John retrieves the mail from the postman, Iris dashes outside. Less than 10 seconds after she closes the door, a car is heard, off-camera, honking a horn. Wouldn't John have found Iris so soon after that noise is heard? She doesn't seem to have enough time to allow for a search for her.
Continuity mistake: While Alice is picking up glasses, she tucks a marigold in her hair. After she drops the glasses and she bends down to pick the pieces up, the flower disappears, then is back in the following shot.