Revealing mistake: Mrs. Doubtfire sets herself on fire. When she jumps back and starts fighting the flames, it is obviously a stunt double as her face is longer.
Suggested correction: If you look carefully, the face looks pretty much the same, as well as the voice.
The reason the voice was the same is that it was probably an audio dub, which is a voice recording over someone else's voice.
Revealing mistake: When the boys' rival team challenges them, all the boys throw their gloves down, except Yeah-Yeah. When they all go to pick them back up, Yeah-Yeah has to pretend to pick it up.
Revealing mistake: At the end of the decisive game, the bad guy hits a deep foul ball. During that hit, they show the ball against a black background. If you look very closely at the bottom of the screen, you can see a hand throwing the ball.
Revealing mistake: The oil lamp carried by Mary when she first finds Colin has a flame that never flickers, and is likely an electric lamp.
Revealing mistake: Near the start of the journey, there is a shot of Chance and Shadow running through a creek. This is followed by a shot of Shadow coming toward the camera. As she turns off to the left screen, something on the bottom moves with her. It is likely a guide for the cat to follow.
Revealing mistake: When the kid is playing the Game Gear and says 'I thought I was playing Shinobi. This isn't Shinobi. Where's Shinobi?', there is no game inserted in the Game Gear.
Revealing mistake: In the scene where Mr.Wilson slips on the bath water and falls, after he does the split you can see his right leg is fake.
Revealing mistake: After the old lady steals the meteor rock from Luigi, the big lady in red picks her up and throws her off down below into a moving car. She gets up and shocks the driver, causing the car to rear end the vehicle in front of it. If you watch closely, you see the engine top shift forward and the back of it lifts up. This reveals it is just a fake prop attached to the vehicle and not a real engine.
Revealing mistake: Right before the witches burst through the roof of Max's house, after they retrieve the book, you can see the charge used to set off the explosion in the window just below where they exit.
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: When Ryce is talking to the vet on the phone, the vet would have to be talking extremely fast because of how little time there is between Ryce's questions.
Revealing mistake: When Porthos shoots the assassin with a crossbow, he is a good distance below him. But when you see the assassin grab the bolt, it is straight in his body as if he'd been shot level.
Revealing mistake: When they leave their home to go to Beverly Hills and Granny is tied to her rocking chair on the top of the car, right before she hits the tree and comes off the car, you can see she isn't a real person. It's a dummy. (00:09:06)
Revealing mistake: When they first arrive at camp and Joel goes to use his inhalers, the mouthpiece is actually in the storage position rather than the actuation position. The puff sound must have been added in later because the inhaler cannot be activated when it is put together that way. (00:22:20)
Revealing mistake: The Turtles are preparing their time travel. Splinter tells them "The scepter will be in the temple, which means..." Pay close attention here, because now the rest of the sentence is obtained dubbing the line over a rewind of the previous footage. (00:21:50)