Revealing mistake: While Bishop and Steve McKenna are practicing with various firearms, a slow-motion shot in the film of Steve shooting a .50 caliber rifle shows that, while the sequence depicts him firing "live" rounds, the extracted shell casing is from a "Blank" cartridge (evidenced by the crimped forward portion of the brass casing). (00:34:15)
Revealing mistake: When Bella calls Rosalie, you can briefly see the cell phone screen before she puts it to her ear. The lock screen is still visible, showing she didn't dial anything. (00:55:45)
Revealing mistake: When Bethany comes home from the hospital after losing her arm, her dad drives them to the back of the house to avoid the reporters. Bethany has her arm covered up with a throw so it can't be seen. When she gets out of the car, you can clearly see the outline of her entire arm underneath the throw.
Revealing mistake: When Brian is racing the GT3RS through the mock up track we have a shot inside while he is doing a hard left. Look at the dash and the speedo on the far left is at 0 while the rev counter in the centre moves. Evidently he was stationary and just revved the car for the shot. (01:04:25)
Revealing mistake: When the apes jump out of the lab windows out to the street, they don't cast a shadow on any of the glass except the ones on the ground floor.
Revealing mistake: When Gosling overtakes the car via the shoulder, you can see dust in front of his Mustang being thrown up by the camera car.
Revealing mistake: When Philip Seymour Hoffman gets a haircut, the camera is extremely close in on the electric razor going through his hair several times, but it is quite obvious that no hair is actually being cut.
Revealing mistake: We see a girl in a wheelchair missing her right leg, but we can briefly see her foot tucked under her left leg.
Revealing mistake: When she shoots the Ponzi scheme guy into his shark pool, the shot where he is seen from the side and sharks in the background, the shark can be seen in the glass part, but not in the water part between the man's arm and the glass piece. (00:58:50)
Revealing mistake: When the kids see the moon picture on the book, an old, chubby hand lays on the page, obviously not the kids'. When the angle changes, their small thin hands re-appear.
Revealing mistake: In the submarine, when Emma goes to get ice for Shaw, Azazel's tail is missing when he helps pull the submarine's ladder down.
Revealing mistake: When Anna's looking at her reflection in the mirror she starts rubbing her face vigorously. Look at her right cheek and you'll it's red before she rubs, result of multiple takes.
Revealing mistake: When Umi is first descending the stairs in her house, her left hand clips through the left railing.
Revealing mistake: While Lynn is driving, the scenery outside the driver's side window goes white a few times and, other times, with intermittent specks of green tree leaves/shrubs. The white-outs are too low to be representing the sky. For a period of time, the lower third or so of her side window is a horizontal white bar. (00:02:20 - 00:03:38)
Revealing mistake: In the scene of the 20th game (the following shot after Brad Pitt leaves the field) we see Jonah Hill looking at him. An extra to the left pulls out his smartphone (which in 2002 was years away from release) and proceeds to take a picture of Jonah Hill.
Revealing mistake: When Donovan witnesses a fatal traffic accident on a rainy night, he suffers a mild heart attack and collapses in the street. Although he's lying on his back, unprotected from the downpour, surrounded by rain striking the pavement in both foreground and background, closeups show that no rain strikes his face, his felt hat, or his clothing. (00:12:20 - 00:12:50)