Continuity mistake: When Martin shows Tim the alien gum, it's sealed under glass. But when Martin takes out the Venox 7 gum, the cover is gone with no time for it to have been taken off. (00:33:35)
Continuity mistake: At the beginning of the movie, Natalie Portman and Susan Sarandon are driving down the road. When they are shot from Portman's side of the car, her hair is blowing and Sarandon's window is closed. But when shot from Sarandon's side, Portman's window is closed, her hair isn't blowing anymore and Sarandon's hair is blowing.
Continuity mistake: When Maggie and Ike are talking outside at the luau, Ike's flower necklace is in a different place every other shot. (01:11:15)
Continuity mistake: When Molly ties Tanya's whip around a bar to let herself down from the air duct, you can see as she slides down that the whip is knotted at intervals. But a few moments later, when the severed hand draws the whip back up, you can see that there are no knots in it.
Continuity mistake: When Ernest asks Meenor if she would like to play football, Meenor lines up the football then kicks it through Ernest's window which has a poster on it - the ball forms a hole slightly left of the face in the picture. When Ernest's granddad comes to the window and puts his head in the hole, the hole has now changed to the centre of the face. (00:54:05)
Continuity mistake: When Richie is running down the stairs, there's no vomit on left hand, but when he asks for a handshake from the policeman, there is.
Continuity mistake: In the first closeup of the record player, there are albums behind it. In the next shot, Monica is arranging the crab dip and, in the background, there is nothing behind the record player. (00:04:30)
Continuity mistake: As Daisy walks past Slater to see Bobby, her arms are at her sides. In the next shot, her hands are behind her back, clenched together.
Continuity mistake: While in Central Park, Snowbell the cat loses his collar and falls into a lake. However, before Snowbell returns home he is wearing the collar again.
Continuity mistake: Approximately 9 minutes into the film there is a scene with 'Koop' talking to a customer in the record shop. The camera cuts back and forth between views from either side of the counter. Look carefully at the turntable on the counter and you will see that even while the turntable is not switched on, the deck is in different positions between camera cuts. This is easiest to notice by looking at the angle of the word 'deconstruction' on the blue slipmat. There is even one cut where the turntable's arm is sitting in the middle of the empty slipmat, and in the next cut (and the previous cut), it's on the armrest where it belongs.
Continuity mistake: Early into the movie Andy is taking part in a meditation session. There is a wide shot of the whole group, which is seated in four concentric circles. Andy is sitting in the second circle, with two more circles behind him. When the camera angle changes to a front shot on Andy the two people behind him have changed, and the outer circle has disappeared. (00:16:40)
Continuity mistake: When Jay Mohr whispers to Sarah Polley in the 1st third of the film (though you don't see him do it) he is at one side of her, I think the left. When it is repeated later he crosses to the other side of her when he whispers to her.
Continuity mistake: Right after the debate in the House of Commons, Robert talks to Gertrude in the hall way. Behind them is a statue head. Several shots later that statue head magically moves to the opposite wall where Arthur "talks" to it.
Continuity mistake: When Dudley's hat is burning he pours water on it. After the fire is extinguished Dudley looks up and you can see that the hat is not burned. After Nell sings her song you can see a large burned portion of the hat gone.
Continuity mistake: When Lucille sees her children through the prison window you see a tuft of grass outside. Seen from outside it isn't there. (01:20:50)
Continuity mistake: In the scene where Jakob discovers Mischa sabotaging the cattle cars and tells him the first news from the radio, Mischa is struck by a guard and knocked off the train, rolling to the ground. He is then bare-headed, but when Jakob runs up to him, Mischa's cap appears on his head.
Continuity mistake: When Rizzo is with the other lab rats and David Arquette says about having a funny boy, he bangs Rizzo's little yellow cap down on his head. In the changing shots, the angle of the hat alters about 5 times; sometimes it is on straight, then its half cocked to the side and at one stage it is on completely backwards.
Continuity mistake: In the new version with Steve Martin and Goldie Hawn, after they get into the cab that some robbers were using as a get-away car, they beg to be let out at a corner and as they basically jump out of the car nobody is left behind to shut the door, yet it shuts like someone slams it shut.
Continuity mistake: At the cheer-leading practice, the coach reminds the girls they need to pick their uniforms for the big game. Yet, when Meagan is on the way to True Directions and she passes the bus with the cheerleaders on it, they are wearing the same uniforms they wore to practice that day.
Continuity mistake: Near the end, when Betsy and Arlene are cutting the stars out of the American flag, one shot is a close up of their hands - they have almost finished when the camera cuts to a wider shot as they question the legality of the activity. When they resume cutting their scissors are further back then they were in the close up ie. they are cutting where they have supposedly already cut.