Continuity mistake: Chris Rock and Morgan Freeman are outside of Rosa's apartment, looking in the trunk of Betty's car. The cut-out of Dr. David Ravell pops out. Chris Rock throws the cut-out on the ground and stomps on it. Chris Rock has on white tennis shoes. Later, when Chris and Morgan are inside Rosa's apartment, Chris Rock is wearing black tennis shoes when he is with the sheriff, taking his gun and handcuffs.
Continuity mistake: In the scene at the carnival, Ryan hands Ashley a drink that he just bought. The drink is full to the top with ice and a lemon. Before Ashley even drinks any of the drink, she walks over to a carnival ride and you can see that her cup is empty.
Revealing mistake: At the start of digging the tunnel, one of the characters (I think Denny) calls Woody Allen, "Woody" by accident.
Continuity mistake: In the beginning of the movie, when Al (Freddie Prinze Jr) meets Imogen (Julia Stiles) She introduces herself as a freshman, and he introduces himself as a sophomore. the movie spans over the rest of the school year until she goes away for the summer. However, at the end of their first summer apart, Al is eating dinner with his dad and they are discussing his upcoming senior year and post-graduation plans. It should only be his junior year.
Factual error: When Meg Ryan goes to visit her mother in Big Bear Lake, the mountain is on her left hand side. If you drive from Los Angelos to Big Bear the mountain is on your right hand side, therefore she was driving down the mountain instead of going up it.
Continuity mistake: When Leslie Nielsen came back from robbing the guys house the man who lived in the house came over to Leslie & started to talk. Later on Leslie put some blue paint on the man. When the camera angles change, parts of the paint splashes are missing on the right side of the man's chest.
Factual error: When they are making the room for the babies, they show the months that are going by, but the mom never has a pregnant belly.
Continuity mistake: When Ray gives his girlfriend the present right at the start, her bag moves up her arm when the shot changes. (00:01:10)
Continuity mistake: When the they first show the Evil Snow-Plough Man, he's chasing kids and they run off to the left side of the road as proven when the kid's sled gets crushed. However, once he's past, they all pop up from a mound of snow on the right side of the road.
Continuity mistake: In the scene where the Dr is explaining that his daughter might be a lesbian to Helen Hunt's character, when they move over to the desk area Helen's arms move from both hands leaning on his chest to only one back to both.
Continuity mistake: When the drunk fat guy falls down in Dawson's flashback, his hat falls off, yet in the next shot the hat has reappeared back on his head.
Factual error: This movie is supposed to be set in the 80's as it says in the beginning of the movie, however, during many shots where the street is visible from the news broadcast center or the scene with John Travolta in the street, there are many cars which were not around. One of these cars, for example is a 2000 Dodge Intrepid.
Other mistake: The girls paint their van with brushes before heading off. When the van is being driven later in the film as they make their getaway, it's obviously been airbrushed, as it's too smooth a paint job.
Continuity mistake: In the beginning of the movie when the letters of "Univershell" rotate around the Universal-logo globe, Earth is pictured as preglacial one-continent planet. When it's pictured as a background looking from out of the UFO it's the regular spaceview of Earth.
Visible crew/equipment: In the shot where Diesel 10 races past Thomas and Gordon near the beginning, you can see a black pencil on the left of the screen.
Continuity mistake: In the gas station scene after Ellen learns that Phil has drowned, she is so distraught she forgets to put the gas cap on and we can see it on the roof of her car as she drives away. But when she arrives at the police station we can see that the gas cap is on. (01:10:20)
Visible crew/equipment: After Cherie falls off her bike, because the limo almost hits her, as the chauffer opens the limo door, a crewmember is reflected in it. (01:18:45)
Other mistake: In the scene where hundreds of men burst into the place where Penelope Cruz gives her cooking lessons, you can see that one of the waitresses drops the plate she is holding a split-second before the guys swing the doors open and rush past her.
Continuity mistake: In the scenes at the beginning where Willy Jack is in the car his shirt changes 3 times before he's finally pulled over with the 14 year old girl. It's all one day. (00:14:00)
Suggested correction: This is not entirely unusual. A person might change their shirt, more than once, if the weather is making them sweat. Especially if the car does not have AC. Novalee said that Willy Jack bought the car very cheap, and there is a hole in the floor, so I would not be surprised if the AC was broken.
I second this. My husband owned a car that didn't have AC, and it was not unusual for him to change his shirt on hot days.
Factual error: Nonna knew the Australia (ie, Josie's real grandfather) in 1945 - the photograph is dated. Josie's mother was born from this union, and had Josie when she was 17. During the film, Josie herself is seventeen. About thirty-five years would have passed, then, making the present about 1980 or so. But it's quite clear (from the fashions, technology, streetscapes, dialogue, references, music, cars, etc, etc) that it's around 2000 or so, twenty years too late.