Continuity mistake: In the scene where Richie is running away from the gaurds he dives over the platform and knocks over the statue with his foot, but when the other gaurds go to jump over it, the statue reapears.
Factual error: When Bill and Jason are heading up to Canada (and Lucia is following in her own car), they are driving past several high mountain peaks, and up through a winding valley. Problem is, they started in South Bend, IN and are heading towards Detroit, MI, and that area of the country is notoriously flat, other than occasional hills.
Continuity mistake: After Paulie is bought from the pawn shop by Ruby, they are out on the sidewalk talking and if you watch in the background, the same red Mustang turns the corner twice in a row.
Continuity mistake: When Sammie wakes up alone in bed, she can see a rapidly moving shadow inside the bathroom. After she sneaks outside the house around to the window, she looks in and we see Sam in the bathtub, masturbating to magazine centerfolds. The problem is that in this second shot, Sam is very far from the door and there is no shadow visible inside the bathroom. In fact, there is not even a light source on the other side of the door from him. Sammie therefore should not have seen a shadow from inside the bedroom.
Continuity mistake: After the photo shoot on the beach the characters are passing around a jug of wine that is almost empty in one shot, but each shot after that it is closer to full.
Revealing mistake: When the dog with its legs in plaster is walking across the passageway the first time you see it its back legs are moving although they're supposed to be crippled.
Continuity mistake: After Marnie has installed the talisman, we are given a glimpse of her where she is flipped. She had been resting on the giant pumpkin with her right leg hiked up and her right foot resting inside the pumpkin's left eye. But she is flipped, with her left leg hiked up and her left foot resting in the pumpkin's right eye.
Factual error: When the whole of the court go on the "view," it seems as though the bus includes barristers, the judge and members of the jury. In reality, the judge goes with the jury, the barristers are not allowed to.
Visible crew/equipment: Just before Johnathan Taylor Thomas climbs into the fake Santa's sleigh to sleep for the night, he is talking to Santa and playing with his hand. On his lower chest is the shadow of the camera (since the light is coming from behind the camera), which disappears in the following angle.
Continuity mistake: When Laurence is about to describe his idea of the perfect woman, Frank has his left hand covering his mouth as he coughs. The shot changes to a different angle and he now has his right hand, holding a cigarette, up to his mouth, whilst his left hand is folded across his abdomen.
Factual error: When Victor and Thomas are riding on the bus from Idaho to Arizona, the same driver is driving the bus the whole trip. In reality, the driver would have changed a few times on such a long trip.
Other mistake: During the intro, the Poet (voiced by the author of the original book, Luis Sepúlveda) is frying a couple of eggs. When he does his dramatic rendition though, he moves the frying pan in ways that would certainly spill its content. (00:01:20)