Revealing mistake: At the beginning of the scene near the end of the movie with Lucius Malfoy fuming at Dumbledore in his office, Malfoy's hair is fanned back behind his shoulders. The lighting in the room illuminates the back of his neck, where you can see his real, short brown hair. (02:22:05)
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 aeroplane, without a single crack in the windscreen, 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: The Senator's Corvette explodes before it hits the ground. (00:09:10)
Revealing mistake: When the crew are getting ready to load up the gold, one of the crew slams the crate lid making the gold bars "move".
Revealing mistake: One of the first times you see Balthazar (Michael Clarke Duncan) you can clearly see the adhesive for the fake scar on his right cheek and that it is coming loose. (00:06:00)
Revealing mistake: When Scooby, Shaggy, Mary Jane, and Daphne go crashing through the window while running from the two monsters, the falling glass and broken window frame pass right through the CGI Scooby. (00:42:30)
Revealing mistake: About seven seconds after Mercedes screams, "No!" at the climax of the movie, there is a shot of all the characters involved in that scene. If you look out the door you can see a white car drive by. (01:59:40)
Revealing mistake: Near the end of the film, when Picard bends the pole down to stab Shinzon, the pole supposedly goes through him and out the other side, but the prop travels several inches down his waist. A shot later, you can see the prop pushing against Shinzon's clothing, obviously not piercing anything. (01:39:17)
Revealing mistake: In the beginning of the movie when Charlie is in the gym, the last can of spray paint he uses, just before the Principal catches him, appears to spray 'clear'.
Revealing mistake: At the scene where all the spy kids are fighting the waiters, watch Gary as he is fighting. The waiter he is fighting throws him back, but then Gary activates his rockets shoes. Yet to activate those shoes you have to tap them together. The rocket shoes activate a few seconds before Gary tapped his heels together.
Revealing mistake: When Jason climbs onto the rail of the fire escape, it is not attached to the wall - intentionally, it has not broken - but then in another shot, two seconds later, it 'breaks'. It pulls out of a visible hole in the wall, although it was never actually attached and there was no hole before. (00:23:25)
Revealing mistake: In the beginning right before the opening dance number begins, Gwyneth Paltrow and Steven Spielberg (in cameo roles) do back flips. You can see the stunt double doing them as the stunt double was wearing a blond wig (depicting Paltrow) that falls off after the first flip. (00:04:22)
Revealing mistake: In the final fight scene in the desert between Broken Sword and Flying Snow, when the camera cuts to the wide shots of them standing there, looking at each other, you can see tire tracks in the sand. (01:24:30)
Revealing mistake: When Stuart's dad is giving final instructions to Stuart as he's about to lower him down the drain, Stuart (and his bright yellow shirt) aren't reflected in the dad's glasses.
Revealing mistake: Just after Zak realizes the power of his watch, he and Francesca ride off into the town square and pass a Los Angeles transit bus. In the same town later that evening, as Zak and Doppler are being pursued by the evil operatives, they disengage the hyper-time, and just barely miss a head on collision with a New York MTA bus. (00:33:15 - 00:48:55)
Revealing mistake: When Ted Brookes slides onto the ice pond after falling down the hill, you can see that at first he slides onto an actual ice pond. In the next shot, you can see that the ice has changed and he is now on a fake ice pond when it starts to break.
Revealing mistake: When Alex uses his time machine for the last time to destroy the Morlocks, watch the closeup of his machine when it's activated. In the lower left hand side of the machine you'll see Alex's laboratory in the background. This is confirmed by director Simon Wells himself in the DVD commentary.