Revealing mistake: When Scrat removes the giant acorn in Scratlantis the city is immediately flooded. Everyone in the background is blown away by the sudden rush of water. However, both Scrat in the background and Scrat's host (slightly off-camera) in the foreground don't move and don't seem to be affected by extremely strong flow. (01:18:50)
Revealing mistake: When the Chairman is watching the TV screen where Damien Drake is being interrogated, the man steps in front of the screen and says "he's about to crack," then he walks backwards as if being pulled, but you can tell the moment Damien puts his legs around him, after several steps. So what pulled him back?
Revealing mistake: Near the end of the film, the mayor, played by Jim Backus, is speaking to Elliot the dragon, who is invisible. The mayor has a cigar in his mouth and smashes it when he turns to greet Elliot. The scene is accomplished by having Backus turn and smash the cigar into a large pane of glass. However, the reflections on the glass are visible.
Revealing mistake: The stick used to make Jack's dog levitate is sometimes visible, for example when Jack is alone on the mountain.
Revealing mistake: The film was rushed to theaters, leaving a few mistakes which Universal fixed. In the original cut, toward the end, Judi Dench's human hand is visible, complete with her wedding ring. This was fixed for the re-release.
Revealing mistake: When SpongeBob is telling King Neptune how much of a jerk Mr. Krabs is, when SpongeBob says, "I am 100 percent man," he leans back and you can see his hat is just floating there. (00:22:25)
Suggested correction: If you mean that it stays on his head, you do realise that they are underwater? It would stay on his head.
Even though they're underwater, everything else stays on the ocean floor level. Therefore, the hat shouldn't stay on Spongebob's head. It should fall off it and hit the floor.
Revealing mistake: When the monsters approach The Cyber gang outside the arcade, Cyber Scooby (who wears the red color) is seen in a blue color in one of the shots facing the arcade.
Revealing mistake: When E.B. Is drumming along to Dynamite at the "Hoff Knows Talent" audition there is an audible bass drum beat but via several overhead shots you can see that E.B.'s feet do not reach either the bass drum or hi-hat pedals.
Revealing mistake: When Tigress is hatching a plan to escape Gongmen Tower after they have been trapped, she looks out over the wall. But take a close look at the archers: they all move in perfect sync, indicating the same animation models were used for all of them.
Revealing mistake: After Spirit gets his second wind when the Colonel is attempting to break him, he breaks the girth/cinch strap by catching it on the fence. At one brief point, the pole of the fence actually appears to pass between Spirit and the girth of the saddle.
Revealing mistake: When Bolt Jenkins lands right into the Gekko Flakes commercial, the whole scene shifts for a bit. Obviously, the cells got a bit messed up during layering while making the scene.
Revealing mistake: At the end, when the NYC children are rushing toward the peach to scoop out a piece to eat, you can see one little girl running with a piece of peach already in her hand.
Revealing mistake: When "Krebbs" the koala is discussing with his other friends in the cell. If you look closely, you can notice a blink in the outline in the "Krebbs" nose. It's a clear ink & paint mistake of the blur line.
Revealing mistake: When Tenderheart Bear confronts Nicholas in the Cave, the light of fire Nicholas has lit casts a shadow of Tenderheart Bear on the wall of the cave. However, when Tenderheart Bear moves his arms, the shadow stays the same.
Revealing mistake: When Pinocchio gets in bed with Gepetto and Figaro, Gepetto puts out the light of the candle. If you watch closely, the light goes out a split second early.
Revealing mistake: In the beginning scene when the dragons are attacking Berk, it shows several sky torch things being raised into the air. As one closest to the camera is rising, a Viking throws a burning stick at it to ignite it. If you watch it closely, you can see the torch starts burning first to the far left, well out of reach of the thrown fire. Even allowing for fumes igniting, the fumes nearest the flame should light first.
Revealing mistake: When Gazeem is standing in front of the Cave of Wonders, he leaves no footprints in the sand.
Revealing mistake: After Littlefoot and Cera's fight, Cera's dad says that each herd is on its own. This shocks the little dinosaurs and they gasp. Notice in this shot that though the dinosaurs move, their shadows don't. Petrie doesn't even have a shadow.
Revealing mistake: When the chipmunks and chippettes and getting ready for the balloon race, Jeanette walks up to Simon and asks him what route to take to Bermuda. Pay attention to Theadore; he's supposed to be in front of Simon handing the chest of dolls to Alvin who is in the hot air balloon. After handing him the chest, he dusts his hands and moves his head a little while doing it. If you look at his head, it seems to cross behind Simon's even though Theadore is supposed to be in front of him. Simon's face may have needed to be seen, but still a mistake.
Revealing mistake: You can see Hero Boy putting the ticket in his pocket after getting it punched the second time, before finding his seat on the return journey. However, the ticket slowly evaporates in the air as he is about to put it into the pocket. His hand thus enters the pocket ticket-less.