Revealing mistake: After Evolet got hit by the arrow and presumably dies, D'leh is staring at a mammoth. Behind the mammoth, you can see that the background is a picture.
Revealing mistake: In the rooftop chase between Bond and Mitchell, it is obvious that both characters are wearing black running shoes, when in the previous scene, both wore smart black suit shoes.
Revealing mistake: The shot of the two girls ripping open their shirts at the Fall Out Boy concert is the same clip repeated the three times we see them. (00:58:00)
Revealing mistake: When the Telmaries are building their war machines, there is a shot of a two-man saw being used to cut timber. There is no sawdust falling from either the saw blade or the wood itself. (00:46:30)
Revealing mistake: Right before Rick grabs the half of the broken dagger, he is starting to stand up, only to be kicked by the Dragon Emperor and slide back about 8 feet. As he starts to stand again, you can see that the background is exactly the same as the first time he tried to stand up - meaning that both moments were taken from the same shot, despite the fact that the background should now be different.
Revealing mistake: When Budderball is rolling down the hill in a snowball, he hits a tree and falls out. You can tell it is just a stuffed animal since there is a stitch on the top of his head.
Revealing mistake: Some of the shots involving the terrorists firing at the prototype suit are "flipped" duplicates of other shots. In the scene where he first emerges from the cave, several of the terrorists are firing M4-type rifles with the ejection port on the LEFT side of the rifle. In reality, except for a few specially made versions, all M4-types eject spent brass through an ejection port on the right. Later in the scene, this shot is repeated, but with the proper orientation.
Revealing mistake: When the guys are heading to the vortex in the cart, you can see the tracks from the previous takes imprinted in the grass.
Revealing mistake: When taking over the Nevada test site, the head Russian drops to tie his shoe as four soldiers pull out machine guns to kill the U.S. guards. Both soldiers on the right run out of ammo, yet keep moving their guns as though they are still shooting. (00:03:10)
Revealing mistake: When Nullah and his mother are being pulled out of the tank, the stitching on the dummy used for the mother is visible.
Revealing mistake: When Liz, Abe and the Agent are shooting at the Tooth Fairies, the Agent is holding his gun in his right hand, and you can see the fingers of his left hand holding on to the top of the gun's slide while he is firing, showing that it's a prop gun and the slide isn't moving.
Revealing mistake: When the Dreadnought blows up the Buick Riviera, it's plain to see there is no engine or transmission in the car when it flips up and forward.
Revealing mistake: When the double-decker bus flips over Roland, the bus has no passengers and the driver looks very much like a dummy.
Revealing mistake: When Jared is first reading the field guide, in flashback, there is a shot of Mulgarath in crow form trying to take the book from Arthur Spiderwick. Later in the movie, when Jared is about to burn the book, the same shot of Mulgarath is used again.
Revealing mistake: The raid took place at Xmas in 1951. In homage to this fact, the characters wear big coats and one of them even rubs his hands together and goes "Brrr." Yet the movie was filmed in the height of summer. Trees in the background of scenes in London are full of leaves, we never see any mist in exhaled breath and the lighting levels and shadows indicate a high, bright sun.
Revealing mistake: During the helicopter escape scene before Tran fires the rocket at them, you can see Cody's hair showing up a bright green from the green screening. You see it several times, but most pronounced at the moment he and Portnoy see Peck arrive with the TiVo. (01:36:10)
Suggested correction: Actually it's from the overhead Plexiglas windows in the Huey. They are tinted green to cut down on sunshine. Any light shining in from above is going to make things appear green.
Revealing mistake: After Trevor has been lowered above the pit of magma, in an attempt to light the magnesium walls with a flare, we see shots of Sean hanging over the edge of the inside of the T-Rex skull. Sean's hands are resting on a large tooth in the skull, which clearly shakes like a fake prop each time he touches it. (01:17:15)
Revealing mistake: Throughout the Demolition Derby, most of the people in the audience are drawn without faces.
Revealing mistake: When Anakin, Ahsoka, and the clones begin their ascent to the monastery on planet Teth, the ascension cable of one clone trooper (second from the front when the shot begins) is not animated correctly and a gap can be seen between the end of the cable and the clone's blaster. (00:35:35)