Continuity mistake: When Hiccup tries to lure Toothless with the fish, he drops his knife on the ground. In the next shot, the knife moves closer to him. (00:28:45)
Continuity mistake: In the scene where Benicio Del Toro is in the tavern listening to the townsfolk discuss his brother's death, you see him finish his alcoholic beverage, however, in the next shot his glass jumps to being half full.
Continuity mistake: The blue van comes to the station and parks after the lights come back on in the diner. When the driver gets out of the van, the car has moved backwards a couple of meters. (01:06:55)
Continuity mistake: Quorra's suit has a light stripe running down its right leg. When she's captured by Tron, the light stripe is now on the left leg. This is most likely a flipped shot as her fringe/bangs are also slanting the wrong way. (01:33:50)
Continuity mistake: In the scene where Carrie is telling the girls about kissing Aidan, her necklace (a crescent moon) keeps switching sides. (01:48:45)
Continuity mistake: When Eduardo finds the letter on the mantlepiece about them apparently stealing the idea for Facebook and asks Mark if they did or not, he places a bottle on the mantlepiece just before he finds the letter. This bottle rotates slightly between shots without him touching it after placing it down. (00:49:15)
Visible crew/equipment: Near the end of the movie while Will Ferrel is going to the bathroom in his house, the camera person is visible in the mirror off to the right of the screen.
Continuity mistake: As Darren passes the cheese touch to the girl, she turns around in shock. In the next shot, she is standing still with everyone crowded around her running away, and Darren is no longer seen.
Continuity mistake: Just as Barney realises it's Gunner who's attacking them, he knocks part of his chrome bumper off the truck and it's dragging along the floor. A few seconds later the bumper is reattached and fine. (00:59:40)
Continuity mistake: In the scene where Aldous gives Arron the adrenaline shot, the needle changes from being in his arm to being in his shoulder.
Continuity mistake: Near the end of the movie, Ethan tells Peter that he had his wallet all along. Peter steps forward from the car wearing his glasses. In the very next shot, they are gone and nowhere to be seen. (01:16:30)
Continuity mistake: When Shane tries to get Mitchie to go picnicking with him, Mitchie turns her body to face him. In the next shot, she hasn't turned at all.
Continuity mistake: When the Rock is giving the kid his present (a hockey stick) the paper covering it changes height in the shots. He even takes the paper almost all the way off when in the next shot it is back on.
Continuity mistake: When Dewey and Gilleece are in the rail roller truck, the tailgate of the truck is clean with nothing on it. After the attempt to climb on 777 fails and the door gets smashed off, the tailgate suddenly has some kind of equipment either attached to or exposed off the tailgate in the middle.
Continuity mistake: Marion is guiding a plow horse when a man comes to collect more tax. As she turns to tell him that her father-in-law is too poor to pay him, her long braid, which has been in front of her right shoulder, is now hanging behind her.
Continuity mistake: In the scene where Renai is listening to the baby monitor, she drops it when the voice screams, "NOW!" On the floor, the speaker is facing down, but in the next shot, it is facing up. (00:22:35)
Continuity mistake: When Charlie is coaching Sam in baseball at the beginning of the movie, they get on the road and he beckons to him. In the first cut, people in the background change (most obviously, a guy is crossing the street behind him, but vanishes in the second shot). (00:07:45)