Continuity mistake: When Emma goes up to the convenience store and meets the rest of the gang, she does not seem to have a bicycle with her. However, after the scene where Emma saves Alex from the security guard, and they run out, a pink bicycle has appeared. (00:41:15 - 00:48:45)
Continuity mistake: While singing in a duet with Miss Piggy, Céline Dion is wearing a dress with a strap over her right shoulder. Near the end of the song, the strap is suddenly on her left shoulder.
Continuity mistake: Halfway through the film, when the turtles ask April to meet them on the rooftop, she is wearing a plain black top under her yellow jacket. In the next scene when the turtles have taken her to their lair, she is now wearing a light grey shirt with a symbol on it.
Continuity mistake: Briareos' VTOL fires all of its forward missiles twice. (The forward missile bays have distinct markings in the form of a set of three white rectangles at each side). (01:15:26 - 01:16:40)
Continuity mistake: Hercules and Tarak are sitting together talking and Hercules pulls out the necklace that his lover gave him as he reassures Tarak that he will get them to Greece. In one shot he is looking down at it in his hands, then the next shot his head is suddenly leaning back against Tarak. (00:37:45)
Continuity mistake: Hercules is bitten on his right shoulder by wolves towards the end. As they escape the dungeon the bites can been seen on that shoulder throughout. But as soon as they escape the bites are no longer there.
Continuity mistake: When the monk hands to the King the seal, he's holding it in different ways between shots (his right index is on the front of the seal in close-up, together with the middle in the next). (00:11:05)
Continuity mistake: During the climax, when the old-fashioned Atari-controller is lowered down from the UFO, watch closely. In the first two shots, it's swinging back and forth rather quickly and dramatically, however, immediately from the third shot on, it's suddenly barely swinging. It's too instantaneous between edits to be the result of it naturally losing momentum.
Continuity mistake: The students' 3rd game is Kagome with 4 Kokeshi dolls. The pink doll starts to the right of the first student to play, the dolls move in a circle around him, she passes in front of him and by the end of the shot she is near his left. The Kokeshi dolls all move backwards between shots and the pink doll passes in front of the student again. After this, she takes 7 seconds to move about 100° despite nobody slowing down and she took that amount of time to move about 170°.
Continuity mistake: When Nick is instructed to leave hotel room #700 Chord verbally tells him to "go outside and turn right." but the on-screen arrow points left and we see Nick turn left. (00:29:39)
Continuity mistake: The dog the boys were trying to catch was facing the fence with his nose very close to it. After one of the boys threw a blanket (or piece of material) over the dog, the dog was facing them instead of the fence. Also, the dog was not as close to the fence and the background didn't appear to be the same. (00:06:07)
Continuity mistake: Before Jesse's plate is placed on the table, the salt and pepper shakers are about a width apart. They are almost touching for a while, then back to being spaced apart. (00:10:20 - 00:11:00)
Continuity mistake: When Thomas first arrives at the Clay Pits, Timothy can be seen with a train of trucks. In the next scene, they have disappeared.
Continuity mistake: Near the end, Thomas is saddling a horse. He throws the stirrup over the saddle so he can cinch the girth. But he is interrupted by the presence of the witch he loves. Somehow, the horse has had its girth cinched and the stirrup is in its proper place, all without Thomas' help.
Continuity mistake: When the kids are looking at the Stonehenge-type structures, the younger boy calls for everybody to come and see the hidden message. From the shot in front of the boy you can tell from his body position he's sitting up, however in the next shot from overhead, the boy is now lying down on the rock.