Revealing mistake: On Billy's first day of school when he is outside waiting for the bus and it just passes him you hear the noise of kids on a bus, but when it passes no one is in it.
Revealing mistake: The kid in the wheelchair is playing a Game Gear with no game in it.
Revealing mistake: When Woody falls out of the closet wrapped in the string lights he hears Buzz's voice, and in the next shot as Woody sneaks up to Hannah's room we see Sid's open door and doorway, which looks perfectly normal. However, after Woody rescues Buzz from Hannah's tea party they both stop in the hallway, and there's another shot of Sid's open door and doorway, only this time it's not normal to say the least. Five of the six hasps, bolts, and locks that should be (and normally are) screwed into and attached to the inside of Sid's door (one hasp mechanism, third one down from the top, is attached to the door's frame) are now actually kind of floating there in mid-air right beside the doorway, as if there's an invisible door there. Weird that Pixar artists deliberately did this, but it's bizarrely funny to see.
Revealing mistake: When Tommy is trying to bend the car door back you can see a wire holding the door in place so that Tommy can hit it as hard as he wants and it won't go back in place.
Revealing mistake: When Craig (Ice cube) is in the bathroom with his father on the toilet and the camera pans back, you can see the father still has his boxers pulled up while he is on the toilet.
Revealing mistake: When "Pop" dies, you can tell he is still breathing, especially if you fast forward the scene. He is just doing it very slowly, but you can see his chest move up and down.
Revealing mistake: When Dracula goes to grab the cell bars on the window to free Reinfeld, the bars are obviously not metal as they shake and have a slight bend to them.
Revealing mistake: When Sam trips over in the cemetery, she falls onto Dear Johnny's cracked tombstone. As she pushes down, the 'tombstone' squashes under her hands. (00:27:25)
Revealing mistake: When Cher is robbed and she calls her brother on a payphone, she doesn't put any money in and she doesn't press enough buttons to be using a calling card.
Revealing mistake: At one point when the sheep are in a neat formation, you can see straps holding them still.
Revealing mistake: During the monsoon scene, everyone is on a table trying to climb on the chandelier. Peter has been turned into a monkey, and his face is covered in hair and has the characterists of a monkeys face, yet in shots when they are on the table, like when the crocodile snaps at them on the table, just before Alan lifts Peter onto the chandelier, you can see the plain face of his stunt double, with no monkey features! Robin William's and Bonnie Hunt's doubles are rather obvious in these same shots too. (01:17:20)
Revealing mistake: The monitors in the hospital attached to Mr. Banks's wife and daughter didn't move, although they should have shown something important about the patients.
Revealing mistake: When John jumps onto the tracks on his bike, look closely and you can see there is wood or some other material between the rails for him to land on. (01:20:20)
Revealing mistake: Casper is shown tying together the shoelaces of the students in Kat's class. When the bell rings and class ends they all get up and fall down. If you look closely you can see that their shoelaces are not tied together.
Revealing mistake: When Payne has the grenade, the top is blue. Indicating a practice grenade.
Revealing mistake: In the opening scenes, when the President is walking with Rothschild and his other aides, he leaves the building to walk to the West Wing. In this early morning shot, one would expect the sun to be the only light, but each actor has numerous shadows. (00:03:40)
Revealing mistake: When the two ladies go to the party relatively near the beginning, one goes off to the toilet. The other one gets shot (through the cushion) she then falls back on a coffee table which completely shatters before she even hits it. (00:26:10)
Revealing mistake: In the "Anger" segment, right before Dice is shot up and killed in the convenience store, the explosive bullet/blood packs are visible under his shirt.
Revealing mistake: After Nicole has showered and she is getting out, you can see that she is wearing underwear as she is stepping out, to protect her modesty.
Revealing mistake: At the cemetery, a reporter nudges a headstone and it moves, revealing it is fake.