Continuity mistake: During the last scene, right before Louise takes off her necklace, Brad is seen dancing with his jacket on. Seconds later when we see him again he has his coat off and now he's on the side of the dance floor.
Continuity mistake: In one scene we are looking at a shopping complex known as Greenspring Station which Nina is being chased through. Somehow she winds up being chased through a K-Mart. Anyone familiar with the Baltimore area, where the movie was shot, knows for a fact that there is not a K-Mart anywhere near that ritzy section of town.
Continuity mistake: During the family dinner, the level of the wine in all the characters' glasses changes from one shot to the next.
Continuity mistake: In the race for King of the Mountain, Anthony wipes out and begins cursing. Then, in the next shot, he has to spit out some snow before he can curse again.
Continuity mistake: When Amy is in the kitchen cleaning, she starts mopping the floor, then dancing with the mop held upside down. The mop starts out wet, but when she's dancing it's dry (either that or she would be getting dirty mop water in her face while the mop is being flung around).
Continuity mistake: In the scene where Shirley and her daughter Milandra argue about Shirley going on holiday, Milandra gets out of bed and dresses quickly, her shirt is tucked into her jeans. She walks out and the camera angle changes to a view of her front, her shirt is now loose outside her jeans.
Continuity mistake: During the car accident Miss Daisy is wearing a beige dress. Later she looks out of the window at the towing activities and is wearing a red dress. When Boolie argues with her about her driving she is wearing a green dress. This is happening within too short a time to explain all this unnecessary changing. (00:03:35)
Continuity mistake: When Fletch goes to visit Calculus in his shack, he knocks on the window and sees Calculus sitting in a chair, wearing boots. The next shot, as Fletch is walking inside, Calculus is now wearing socks and no boots, despite never having left the seated position, nor having had any time to slide his feet out of the boots. (00:35:55)
Continuity mistake: During the "exciting" conclusion, Investigator Natsuo runs toward the villain's vehicle, jumps, and kicks through the windshield. Besides the fact that there are some poor special effects at work, watch this quick shot closely. As he is flying through the air in that split second, the villain's car changes colour! It is quite obvious, as the car goes from a dark red color to dull grey.
Continuity mistake: When Lurleen changes lanes to pass the Ferrari, the lane change isn't reversed when Lea sees it in the Ferrari's rearview.
Continuity mistake: At one point, when they time-travel away from "1,000,000 B.C.", Bill is on the left inside the phone booth and Ted is on the right. When the camera switches away, then back, they've changed sides.
Continuity mistake: When Wallace races to get crackers, check the packet's logo. When the camera angle changes it's different. (00:08:57)
Continuity mistake: Near the end of the movie, Larry is watching Maria at the wedding reception. The flowers change on Maria's table, and a plate and glass appear.
Continuity mistake: After the girls arrive in Myrtle Beach and are getting ready to go out, Luannne has ratted Carson's hair really big, when Meliana takes over doing Carson's hair, in just a few strokes it is much flatter.
Continuity mistake: When the devil sets Toxie on fire, there's a group of five people standing there with empty buckets. But in the next shot the buckets are filled with water.
Continuity mistake: In the scene where Sean Connery is in prison & Matthew Broderick is visiting - the camera alternates between looking into the cell (at Sean) and looking out (at Matthew). Watch the hands that are holding on to the cell bars - they move each time you get a new shot.
Continuity mistake: The snowman hits his nose with a hammer, completely bending it in half. In the next shot it is suddenly magically straight again.
Continuity mistake: When Brian spends his first night in the underground monster world he goes in wearing a shirt and boxer shorts. But a later scene shows him wearing a shirt, pants, and shoes. He then goes back home and is back in his shirt and boxer shorts.
Suggested correction: It's entirely possible that he was able to borrow a pair of pants while down there.
I just watched the scene where Maurice and Brian pull the pranks to get the kids into trouble and he is in his pyjamas. Later in the monster world he is in a full outfit including a shirt, pants, and shoes. Then he goes back home and he is in his pyjamas again.
Continuity mistake: When Sam is swinging the shovel at Putnam's car he busts the driver's side headlight twice.
Continuity mistake: In the opening credits, when Smart gets inside the phone booth, the doors are not fully closed, but the immediate close-up angle shows them fully closed.