Continuity mistake: When Brant kills Barry at the end of the movie, Brant lowers his gun after shooting him, but in the next shot he is pointing his gun at Barry. Also, the scene shows Brant holding a semi-automatic style handgun before shooting Barry, then when the scene pulls out it shows him holding a revolver, then shows him holding the semi-auto again.
Continuity mistake: When Gosling crashes into Nino's cars a few times, the front end of his car is noticeably damaged. However, in the subsequent shots, the car is perfectly fine. Even the front headlights are implausibly intact and working despite just T-boning Nino's car.
Continuity mistake: In the scene where Jill and Charlie are revealed as the killers, Jill is holding a knife to Sidney's throat and a gun in her left hand as she explains her motive. When Jill and Charlie are getting ready to stab each other, the shot changes and Charlie hands Jill the knife, even though she just had it in her hand pointing it at Sidney. (01:11:20)
Continuity mistake: Before killing the dragon, Baby Doll is holding her sword with her right hand. But when she jumps up and kills the dragon she is suddenly holding it with her left hand.
Continuity mistake: When Mystique is on the exercise table and Erik lifts the bar off her, her right leg changes from stretched out to bent from the different camera shots.
Continuity mistake: When Nicholas Cage comes out of the church, you see his reflection in the car's rearview mirror. His injured eye is his (left in the mirror image) right eye. Later, he is shown with an injured left eye.
Continuity mistake: When Eddie is hiding with the golf club, there is a blue chair which got knocked over during the murder. But a few minutes later when Eddie is peeking round the corner to check for intruders, the blue chair is magically standing upright again.
Continuity mistake: When John sees his photos on Sarah's website, the lower row of photos shows him throwing a football. However, when Sarah took those photos earlier, she only took out her camera AFTER he threw the football, while John was already talking to Sam.
Continuity mistake: After meeting Elise on the bus and getting his Blackberry dumped into his coffee David Norris calls his friend Charlie with his "spare phone" (silver). But after a cut or two you can see that he uses his BlackBerry again. So he has changed the phone during the conversation AND his coffee BlackBerry seems to be working again. (00:19:20 - 00:20:10)
Continuity mistake: After Steve throws Heinz Kruger, the assassin sent to kill him, out of his boat, both Steve and Heinz are bone dry despite being fully submerged in water only moments before.
Continuity mistake: In the scene where Bishop and Steven are being chased on the skyscraper, after killing Vaughn, Steven encounters a man coming out of a blue door. Steven disarms the man and fires 2 shots into him, yet there are 3 bullet holes in the door behind him.
Continuity mistake: In the scene when Danny and Hunter try to escape, Hunter grabs his wrist watch back from an enemy and drops it in his left pocket. He has no watch on his either of his wrists, yet in the next shot, his watch suddenly appears on his left wrist. (00:14:55)
Continuity mistake: Throughout the entire vault chase scene, the condition of Dom and Brian's car windows switch between being damaged and perfectly intact. (01:42:20)
Continuity mistake: In the scene on the Golden Gate Bridge when the apes are pushing the bus, the police shoot the bus numerous times, but when the camera goes off the bus and then shows the bus again (twice) the bullet holes are not there anymore.
Continuity mistake: At the campground, when Hanna and Sophie are under the blankets together, each girl is shown throughout the conversation laying on her left side. If this were actually the case, they would both be facing the same direction, not facing each other. (01:00:45 - 01:03:30)
Continuity mistake: In the 1982 movie, the alien ship is uncovered by the Norwegian scientists using thermite. (As seen on the films discovered by the Americans.) In the 2011 movie, it is uncovered when the Thing gets back into the ship and starts up the engines.
Continuity mistake: When Sylvia shoots Timekeeper Leon, the S&W 945 in her hand has a magazine inserted into it. But in the next shot where she quivers and rushes over, the magazine is gone.
Continuity mistake: During the film, Daniel Craig's character rides out to the house where he last saw the woman he was in love with. During the wide shot showing him on his horse riding toward the camera, the device on his wrist is missing. It is obvious if you are paying attention, as he is using the arm which is supposed to have the device to hold the reins of the horse.
Continuity mistake: During the bridge collapse scene, when Olivia is crawling on the beam, she is first seen on the part of the beam that is closer to Sam. Almost instantly afterwards, she is on the part of the them that is closer to Molly. The space between the two beams increases significantly between the two shots as well.
Continuity mistake: During the final shootout, there is a shot of Nantz firing his handgun. A few shots later, Nantz pulls out his handgun and begins firing.