Revealing mistake: In the day following the Rider's first ride, Cage shows up at the street that has been burned down the center. A person very close to the beginning of that scene walks on the broken up rocks and it moves as if it were a pad or a sponge. It wasn't a rock moving because the street moves with the rock. It happens a couple of times during that scene.
Revealing mistake: When the taxi goes over the edge to capture Dr. Neville, you can see that the underbody of the car as it goes over is a flat painted surface and not the underside of what should be there (i.e., muffler, gas tank, etc.).
Revealing mistake: When Troy crouches down on the rocks, and leans down to see his reflection in the water, oddly the reflection is not reversed, yet his hair is combed the opposite way. (Did the director actually think that if Troy's hair was combed the opposite way it would pass as a reversed reflection?) Additionally, when he crouches down, the bottom button on Troy's shirt is unbuttoned, but in the reflection (as well as in the previous and following shots) the bottom button is buttoned up.
Revealing mistake: In the scene at the motel where Chigurh kills three men, he goes to sit on the bed where he removes his socks. In the background one of the 'dead' men opens his eyes and looks around.
Revealing mistake: The quick shot of the Bible landing in the drawer is reversed. (00:29:20)
Revealing mistake: Although set in the 1960's, the school bus lettering was Arial, a font not invented until 1983.
Revealing mistake: When the C130 is taxing on the runway (just ahead of the police search of the plane) you can see a C-17 in the background. The C-17 only made its maiden flight in 1991.
Revealing mistake: During the film, the Nike tick on the Arsenal shirt is a reversed tick, revealing a flipped shot.
Revealing mistake: When Jack Gramm's Porsche explodes and make a flip in the air, the rear compartment where the engine is supposed to be is empty, and the rear axles and the tailpipes are common pipes.
Revealing mistake: By the end of the movie, when Jamie Foxx is holding the dying Arabian cop, you can see that Jamie's neck injury looks extremely false.
Revealing mistake: When Laura falls in the bathtub, a stunt is doing the fall, because her hair colour and style changes.
Revealing mistake: Rachel slides off her panties while trying to seduce Harlan, and when she offers to let him "touch it", she parts her legs slightly and it can be seen that she's wearing another pair of panties.
Revealing mistake: In the scene at the beginning of the film when the bus enters the village, you can see that the road signs are on the left side of the road (not facing the bus) and the continous line that separates the two ways is on the exit of the curve, not before the curve. This is because the action of the movie is set to happen in England but that scene was filmed in Romania, a country with right-hand traffic. (00:03:20)
Revealing mistake: When Holly is in bed with William, and then finds out that he is 'Billy from the band', just as she pulls away from him to bolt out of bed, the modesty top she wears is quickly seen.
Revealing mistake: In the bedroom, when Cassandra asks about what Jane has been writing and Jane answers, "Just something I started in London", when Jane gets up and moves to the table, it is obvious that she is wearing a g-string under her nightgown.
Revealing mistake: In the jazz club, the saxophone player's finger movements don't match what he is playing.
Revealing mistake: When Edward and Carter are driving a motorcycle across the Great Wall, you can see that the man sitting on motorcycle is not Jack Nicholson. He has been replaced by a bit too obvious stunt double.
Revealing mistake: When Billy is looking at Nick's driver's license, for sex it says F for female.
Revealing mistake: After Dark Superman opens the door to the salon, the camera pans across the women inside and their reaction to seeing him enter. Watch closely at the stairs, there is a lady just randomly hovering in the air above the stairs and away from the ledge. Not touching the ground, she is actually just hovering there in an drawing error. Her waist down to her legs are visible just in the air. (00:52:55)
Revealing mistake: In most of the scenes of the film, the famous filly is impersonated by a colt.