Revealing mistake: When Sara and Ms. Minchin are fighting in the attic, it is night time, but there is light coming through the cracks of the attic.
Revealing mistake: When Jim is rescued from the snow (thrown over Reggie's shoulder), he moves his leg, although he is supposed to be unconscious.
Revealing mistake: Near the end of the film Willy jumps on a barrier in the water, causing it to break. During that scene its clear that the orca has been pasted into the background as the outline is too sharp.
Revealing mistake: Anytime the camera is on Richard Dreyfuss' hands while he's playing the piano, it is clear that he is not actually playing; his hands are frequently in the wrong part of the keyboard for the sound being produced. At other times, when his hands are moving down the keyboard, the pitch we hear is going up, or vice-versa.
Revealing mistake: At the cemetery, a reporter nudges a headstone and it moves, revealing it is fake.
Revealing mistake: After the XO orders all stop, we see a close-up of the ship's yoke being pulled back. The next wide shot shows the interior as the bow of the sub is rising, and just before this shot ends, note the console that the man with headphones is working at. A pair of crewmembers cross paths in the foreground, then the entire console wobbles, proving it isn't attached to the floor at all. (01:09:00)
Revealing mistake: There are many shots in the supposedly sold out arena showing quite a lot of empty seats or obvious prop standouts of people in the seats.
Revealing mistake: When Rimbaud dies, as the nurse covers him with the white cloth, he blinks for a fraction of a second.
Revealing mistake: When Kinjo is fighting Saito, he throws away his sword and fights Saito with his bare hands. During the duel, he first slams Saitos arm over his knee, then elbows him in the side of the head. But look at Saito's head; he reacts to the elbow LONG before it connects.
Revealing mistake: When Katie is making Sharkey levitate as part of her circus act, you can see the shadow of some rigging connecting him to a nearby pillar. (01:43:50)
Revealing mistake: The width of the telephone pole behind Ebbie is about two-thirds the span of her shoulders but is just as wide when the background is blurred. (00:22:10 - 00:23:18)
Revealing mistake: Obvious stunt double for Susan Lucci in the skinny dipping pool scene. The stunt double's hair is longer and straight while Susan's goes past her shoulders only some, has bangs and is slightly curled.
Revealing mistake: When the hitched car driver makes a left turn, check Nomi's hair and you'll notice that she's been replaced by a stand-in.