Plot hole: When Fluffy saves Chloe she calls out 'thank you Fluffy'. Cruella never told her the dog's name so how did she know it?
Continuity mistake: Keep an eye on the audience members sitting behind Fred Willard and his partner during the final show scene. The man between them changes from an asian man in a pea green coat to a caucasion man in a tux within the same scene.
Continuity mistake: When Paul goes to get pizza and a movie for Dora, the movie messes up the order that he gets them. First, he goes to the pizza place, and picks up a pizza, you can clearly see him holding a bag. Then, he goes to the video store (with a cameo by David Spade), he has nothing in his hands. Then, he has both after.
Factual error: In the scene where Billy's brother argues with a miner in the local shop, there is a plastic Polo dispenser that wasn't around in 1984.
Continuity mistake: It's pretty interesting that Charlotte is supposed to be suffering from a terrible heart condition, yet whenever she's in the hospital, there's never a heart monitor anywhere around.
Continuity mistake: There are seven Wharvey Gals. Three on the stage singing, three with the wife, and one that she's holding. One of the girls even says that there are seven of them. Yet in the end, when Everett and his wife are walking down the street, there are only six. One that she is carrying, and five following.
Visible crew/equipment: In all the President Kennedy White House shots, you can see the boom mic peak down several times. Look for the group shots, and the boom mic will be there.
Continuity mistake: When Jet Li is playing football in the park and Maurice falls on top of him, Maurice's scar is on the left side of his lip, then when the camera cuts back to him it's on the right side. (00:50:40)
Other mistake: During the ending scene, when Samuel L. Jackson is walking away from the camera across the lawn, he passes directly between the platoon on the right practicing rifle drill, and the platoon leader giving them orders. Marines are taught to NEVER do this. It is called "breaking ranks", and a Colonel in the Marine Corps would have known this.
Continuity mistake: In the scene in which Leonard writes on the back of his picture of Teddy, "He is the one. Kill him," we see a shot of Leonard placing the picture on top of his tan jacket on the bed as he goes to write on it. Then, it goes to a close-up of the picture in which the jacket has disappeared and the picture is lying directly on the blue bedspread. It actually happens twice within that same scene. (00:15:15)
Continuity mistake: After Sunshine shows up at practice with his father, he picks up a football and throws it at Bertier. On the way down, the ball looks as if it will miss the player by 2 or 3 feet to the right, but on close up it hits him square in the back - rather weakly.
Continuity mistake: Microphones are clearly visible in at least five scenes.
Character mistake: When the biologist guy talks about writing code for DNA he names the four codes as A, G, T, P, when they are actually A, G, T, C.
Continuity mistake: After the charity dinner, Meg Ryan and David Morse are having a fight in their kitchen. Note a missing drawer on the right hand side of the greenish cabinet. But at the end of the scene, when Morse leaves the room, the drawer is back where it belongs.
Continuity mistake: When Mathew Perry goes to Chicago to meet with the head Boss, Bruce Willis' wife comes to talk with him at the hotel. In the scene where he is brushing his teeth he picks up the mouthwash bottle and swigs some, then sets the bottle down on the counter. The camera cuts back to her, then back to Matthew Perry, and the mouthwash is gone. (00:32:50)
Continuity mistake: At one point late in the movie, Arlene McKinney is at the kitchen sink. If you look through the window it is daylight out. She then goes outside and it is night.
Continuity mistake: During the last game he slides into the endzone and when he stops the centre of his body is clearly on a border of green field and grey field. But when the shot changes to a different camera he is nowhere close to any green field.
Continuity mistake: When Maya enters Peter's office for the first time, you can see that he had just written something on his laptop. While they talk, you can see the word-program on the computer screen: it shows one page. Cut to Maya, then back to Peter: it shows two pages. Another cut: one page. This happens two or three times throughout the scene. (00:29:30)
Revealing mistake: When the Pterodactyl is flying around with the egg, its shadow isn't cast as she flies over the trees.
Revealing mistake: In the scene where Rudolph is saving Tony from the truck he says, "close your eyes, Tony". But in the next scene when they are on the blimp the boys introduce themselves. Rudolph did not yet know Tony's name but yet he said it.