Continuity mistake: When JB is driving the truck and is being bombed with grenades from the helicopter, the truck gets smoke blackened. But when he arrives at the speedboat, all the smoke marks have gone.
Factual error: In the montage sequence showing Drew Barrymore hanging out with the math club, they have a Pi poster with 3.1457869986. Only the first 3 digits are actually correct. (Pi = 3.1415926535897...) (00:25:20)
Revealing mistake: When Draven sends T-bird to his death in his car, the real Ford Thunderbird is replaced by a fake mockup using a flimsy one-piece fiberglass body mounted on a pair of straight axles. When it explodes, the body lifts off in one piece, warping wildly while the front axle simply falls away. No proper car components like engine, transmission, suspension and so on, are seen anywhere, though they should be. (00:57:05)
Visible crew/equipment: A stock car carrying Mel Tillis and Terry Bradshaw drove into a hotel swimming pool. If you watch the car as it drives into the pool, you'll see the jump ramp built at the end of the pool.
Continuity mistake: When the Rad Pack first meets and are skiing together, Dan O'Callahan is wearing a blue baseball cap and sunglasses. In some later shots he is wearing a stocking cap and goggles. (00:31:25 - 00:32:00)
Continuity mistake: Everyone is having dinner at Lady Catherine's house. Watch the candles in front of her. In the close-up shot of her face, every candle is standing up straight. In another shot, further away, the second candle from our left (Lady Catherine's right) leans towards the left side of the screen.
Continuity mistake: Early in the movie after Haley Joel Osment befriends a bum they are sitting at the kitchen table and the bum pours Haley a bowl of Captain Crunch and fills it over the rim of the bowl. In the next wide shot the bowl of cereal is below the bowl's rim level as they pour milk into it.
Continuity mistake: Early in the movie when Lloyd gets his wallet trapped in the newspaper machine, it shows his wallet, however in the very next shot his wallet is not there.
Continuity mistake: When the women ride by on horseback in the woods, once they pass the men, they've switched sides. (01:05:38)
Continuity mistake: When Jack first meets Maya and they are all having a drink at the bar, Maya is holding a cigarette. We can see she is holding the cigarette up near her face when the camera shows her from behind but is all of a sudden holding it near the bar counter in shots of her face. This continues until about halfway through the scene.
Continuity mistake: After Rosemary cuts the cake, she lays the knife down and in the next few shots the knife changes position from laying down to sitting up back to laying down again.
Continuity mistake: In the scene in the diner Julie's friends are telling her Tommy wants to take her back, Stacey enters with school books close to chest and sits down. The next shot shows the books on the table, and the following shot shows books back against her chest. (01:05:00)
Continuity mistake: When Stifler has the "truffle" in his mouth, there is none over his teeth. Then there is loads all over his teeth instantly. (01:07:15)
Continuity mistake: Celine is opening her apartment door. The door-handle is on the left side. When they walk in and close the door, the door-handle inside is again on the left side. (01:08:25)
Continuity mistake: When Ariel and Rusty are at the diner discussing Ren, Ariel has a French fry in her hand halfway up to her mouth, but when the shot changes her hands are back to the bowl of fries. The bowl of fries move closer to her between shots as well.
Continuity mistake: When Henry is telling Claire about his vasectomy, the paper mold on the table in front of her is right-side-up in one shot, then upside down, and then back to right-side-up.
Continuity mistake: When the paperboy comes around to collect his $2.00 plus tip, Lane keeps the door only open a crack. But when it switches to shots of the paperboy not only is the door wide open but the color has changed from blue to white. (00:22:00)
Continuity mistake: When Wall-E presents Eve with the plant, he is facing her directly. When Eve is later viewing the footage from her security camera, Wall-E is shown facing at an angle towards the left of the screen, instead of straight ahead.
Continuity mistake: In a couple of close up head shots of Paul Bettany in the final match, the tag in his shirt is visible. In one shot the size of the t-shirt is L (large), in a later shot within the same scene it says M (medium).
Continuity mistake: When Holly is meeting Ben for the first time and Holly's friend says, "Sounds like she's not into romance," Holly is eating a spoon of ice cream in the shot from the front. However, in the shot from the back, Holly's hands are on the table.