Revealing mistake: When Peter Parker first discovers he can climb up walls (while in citizen clothing), he tests it out by climbing up a building in an alley. During this scene, you can clearly see his clothes hanging out forwards, indicating that the scene was filmed with him crawling along a floor horizontally. (00:24:50)
Revealing mistake: In the scene when the main character is in the library on the internet, she goes to a couple of websites. When the shot shows the URL up top, it is C:\windows98\mydocuments\etc.html. Instead of actually searching on the web they used a premade html page and accessed it from their computer.
Revealing mistake: When Amidala and Anakin are eating and he cuts her a piece of the fruit and "floats" it back to her, the bite appears in the fruit a split second before she actually eats it. [This appears to be fixed in rereleased versions]. (00:53:40)
Revealing mistake: After the helicopter escape at the end, a red sports car is sticking nose down in the ground after falling hundreds of feet down out of the airplane, without a single crack in the windshield, in mint condition. The yellow one only has the right door open. (01:59:30)
Revealing mistake: When the riders break out of Helm's Deep, you can see the hooves on some of the horses pass straight through the Uruk-hai corpses on the bridge. (01:29:10)
Revealing mistake: At the end when Sullivan is shot in the back while looking out the window, you can see blood come through the front of his shirt, meaning the bullets must have exited his body, yet the window he is standing in front of isn't shattered by the bullets that had passed through him. Also, immediately after this when Jude Law sets up his camera to take photos of Tom Hanks dying, the blood all over the glass is completely gone. The window is clean.
Revealing mistake: In the scene where Calvin is driving with Ricky after bailing him out of jail and Ricky tells Calvin to pull over so he can toss the gun, you can clearly see that Calvin isn't actually turning the steering wheel. You can notice this more after Ricky gets back in the car and Calvin drives away and does a hand-over-hand turn.
Revealing mistake: There is a shot right after the first time the clerics are entering the city from the nethers that you see an APC patrolling the wall road above the entrance. In that shot two shadows are being cast on the road. As the CGI APC passes through them they simply don't cast a shadow on it as they should. (00:08:40)
Revealing mistake: When Jake is driving Andrew to Melanie at the battlesite, Jake is driving with the truck in the park position. (01:11:00)
Revealing mistake: On the transport trailer, Frank leans out his car window and dramatically fires at the ramp's tall lever control in a close-up, located at the rear of the transport over the tires. The problem is that the trailer has no such lever control, as seen in the previous shot before it drives under the bridge overpass. (00:07:55)Super Grover
Revealing mistake: When Slim and her daughter are running away from the husband they run onto a bus. When it cuts to the bus driving away you can see that Slim is holding a dummy, which is supposed to be her daughter.
Revealing mistake: In the scene where Norton's wife is target shooting with the revolver, there aren't any bullet heads showing in the cylinder. There's also no recoil as she fires.
Revealing mistake: When Damoscinos is dying, just after being bitten, he stumbles to the ground. As he does so, you can see the tube feeding the green "blood" to his neck on the ground behind him.