Continuity mistake: When they are discussing whose pinkie gets cut off, Vince grabs Craig by the neck and pushes him against the refrigerator. Craig is first shown pushed against the right hand side of the refrigerator, but whenever the camera is on him for the rest of the scene, he is shown standing against the left hand side of the refrigerator.
Character mistake: In the scene discussing the provenance of the mirror, the girl stated that Sherman marched to the sea in 1865. It was actually 1864.
Other mistake: When Ms Nicholson's boyfriend arrives in a bus, a digital clock is showing a temperature of 104°. Yet this man, as soon as he gets off the bus, puts on a woolen jacket over the shirt and tie he's wearing.
Continuity mistake: When Paul Walker bends down to see his wife's body, the clock reads 09:47, however in the next scene, the time stamp on the movie shows 09:30am. (00:13:00 - 00:13:40)
Continuity mistake: When Oscar is on the phone to learn about the location of the job interview in the warehouse district, the paper that was on top of the payphone jumps suddenly in the hand that holds the receiver to his ear, with the phone call already being over. (00:22:25)
Continuity mistake: Emily Smith-Dungy just kicked her bags in the snow. Her neighbour and schoolmate Kat drives by and offers her a ride home. Emily after initially rejecting her help accepts it; the trophy switches hands from the first quick shot to the next. Her scarf is also positioned differently. (00:08:40)
Revealing mistake: Before Derek punches the side of the wall, you can see the weakened area of the wall before impact. Look at the color difference.
Continuity mistake: The Appraiser puts the condemned tape across Dorothy's wrecked porch. The tape from the bottom right to the upper left is the one in the front of the other diagonal line, but then it's the other way around. (00:07:30)
Continuity mistake: During the first meeting between Sebastian and Belle, the dog drops the game far back on the hill, but the rest of the scene takes place with the dead hare right in front of the 'beast', on the edge of the rock. (00:10:10)
Continuity mistake: Radha Mitchell is giving a press release at the beginning of the movie. There are many microphones in front of her in rows. In the front row, from her left, are orange, black and blue microphones. In one shot from the front, another black microphone appears next to the blue one. (00:03:35)
Continuity mistake: When Keisha shows the father the painting she made, the father places it on the table over the color palette. Then after Keisha screams in the father's face, the magazine is gone. He sprays her with breath spray and replaces the painting over the color palette. (01:07:00)
Factual error: Just after Spud gets suspended from school, his mum is looking through a property catalogue of London homes. All the telephone numbers shown start with 020 7. The film is set in 1991, and inner London telephone numbers at that time started with 071, not changing to 020 7 until June 1999.
Other mistake: Keira Knightley looks down at her phone, there is a beautiful female hand holding the phone with long slightly curved nail beds. This is not Keira's hand which is seen many other times times throughout the film. She has shorter nailbed and flat nails. (00:22:37 - 01:13:56)
Continuity mistake: Jen unboxes the stuff she grabbed from the basement where she spotted the railroad tracks. She picks up a large vase which she shows to her business partner; the hand at the bottom is the vase is the left or the right one depending on the camera angle. (00:10:40)
Continuity mistake: The English teacher enters the classroom for her first lesson. She writes her name on the blackboard. Her name is written in at least 2 different styles that randomly switch during the scene (easy to tell from the double underline; the two strokes connect with the circle of the capital initial of her name, or stop at the tail). (00:07:00)
Continuity mistake: The movie opens with a man walking with a dog by a body of water. He is holding the leash with his left hand and the dog is by his left side. Cut to the next shot taken from across the water, the leash is now in his right hand and the dog is on his right. (00:00:20)
Continuity mistake: When the awful cousin Charlotte hands Gwen the slice of unbirthday cake, she does it with her right hand, left hand, right hand. (00:04:20)
Continuity mistake: When Aaron throws the umbrella down it turns inside out as it lands on the floor. A couple of shots later the umbrella can be seen from above and it has turned right side out.
Other mistake: In final 14 minutes, the greys are attacking the house. Several screws are "unscrewed" from the plywood. The first two are turned the wrong way, and the sound effect is of tightening. (01:23:54)
Factual error: When Diana's father's surgeon shows Diana around the hospital, they end up in an operating room and they are both wearing street clothes. Problem is there are doors in every hospital where operations are performed and no-one is allowed past those doors without wearing scrubs, paper hats, booties and face masks, no matter who you are - they have to keep the operating rooms as clean as possible.