Other mistake: When Alice asks Dan to make her some tea (after he tells her about him and Anna), he walks into the kitchen for just a moment, and comes back to find her gone. He also doesn't see her as he runs downstairs and looks outside. She couldn't have quietly gone down the stairs and out of the building in the short moment that Dan was in the kitchen. If she had moved quickly, there should have been a lot noise from her footsteps.
Continuity mistake: When Mia takes the chicken out of the basket and it gets loose, we see the chicken run away, followed by Mia running after the chicken, and finally the palace guard falling amid a number of boxed, gift-wrapped presents. The only boxed presents that were visible in any of the previous shots were already on the floor, and there were none anywhere close to the palace guard that he could have knocked down as he fell.
Factual error: One day the prince accompanies his father to a meeting to solve an upcoming worker strike. This should not be possible, since Denmark's constitutional monarchy has no influence on the workings of the government. (00:11:40)
Continuity mistake: In the scene where Mike picks up Deborah, we see a shot of his Audi and there is no licence plate on the front of his car. In the shot we see him driving, it has one.
Factual error: In the scene that takes place in Ollie's office after the death of his wife, he is talking to Arthur Brickman who is sitting in front of a plaque for the band Songs:Ohia's album, "Ghost Tropic." We know that the scene is happening 7 years in the past, because Gertie is a baby. "Ghost Tropic" wasn't released until November of 2000.
Continuity mistake: During the "Echo game", Jin throws the full bowl at the targets and all of the shells fall on the floor. Yet in all shots afterward, they are nowhere to be seen.
Continuity mistake: When Helen takes the kids to the fashion show, they walk past Paris Hilton, who is sitting just to the left of the stairs. A minute later, when the little girl sees Paris' dog, Paris is now sitting on the opposite side of the runway.
Continuity mistake: In a profile shot, Largeman and Sam sit close together in a bathtub talking about Largeman's mom. Largeman begins to tear up and when the film cuts to Sam saying "Largeman" we see she is suddenly leaning against the back of the tub. When it returns to the profile she is kneeling close to him again.
Factual error: When they show the Nelson Eddy song 'I Love You', the set/movie shown is Rose-Marie. But that number is from Rosalie not Rose-Marie. Two totally different movies - one set in West Point not with the Canadian Mounties. There are no Cole Porter songs in Rose-Marie, likewise there are no Mounties in Rosalie. Rose-Marie's music was by Harbach / Hammerstein II / Friml / Stothart. (01:09:25)
Revealing mistake: Towards the beginning of the movie, young Alexander tames a horse and then jumps on the horse and rides off. He is supposed to be riding bareback, but in one of the shots from a distance, you can tell that the actor's feet are in stirrups.
Audio problem: When Lola is on stage performing Eliza Rocks, she turns her head away from the audience and quickly whips it back. As she is turning her head away her lips are not moving, but the song continues.
Factual error: The bird hovering near Manech's lighthouse is supposed to be an Albatross, but it's a Gannet.
Continuity mistake: In the shot when Anna is on the helicopter after running from Ben, his t-shirt is up (showing his stomach), then down, then back up again in a matter of seconds.
Continuity mistake: When Passepartout and Fogg arrive at The Royal Academy of Science explaining about breaking the speed barrier, Lord Kelvin asks where his authorization is and mocks Fogg while laughing and lowering his right arm. When it cuts, his arm is back up to his stomach. (00:13:00)
Other mistake: In the end when everyone is on the Kippie Kann show, they show the clip of Lulu and Joyce at the restaurant. It shows Lulu saying, "I'd say it's nice to see you, but then I'd be lying." In the restaurant scene, Lulu never says that.
Plot hole: When Dan is chasing after Carter to catch him and Alex together at the restaurant, there's very little chance he could have had any idea where Carter was going. He couldn't have told the cab driver to "follow that taxi" because in the time between Carter getting in a cab and Dan getting in a cab about 5 taxis drive past, so how he happens to end up at the same place is a miracle.
Revealing mistake: At the beginning of the movie a hamburger is thrown in hopes that a dog will "fetch" it. When the dog does not do so the hamburger is retrieved twice, in perfect shape, to be thrown two more times. On each throw its various parts would have landed individually all over the place and not been throwable again.
Continuity mistake: When Jack and Miles pull up to the house to retrieve the wallet, one of the drapes is pulled back in the front window. When Miles walks up to the house, both drapes are drawn over the window.
Revealing mistake: During the wedding scene, while the narrator is talking, you can see the string that will pull the left table apart. As said in the commentary, the filmmakers weren't going for the idea of people pulling the tables apart, but rather some other force parting them. (01:27:40)
Continuity mistake: When Josh Hartnett is in the hotel dreaming about meeting Lisa, and he is driving around in his friend's Mustang, the wheels/hubcaps on the car keep changing.