Revealing mistake: When Anna and Hans are dancing in front of the lighthouse, we don't see the shadow of the railing or the ground they're standing on.
Revealing mistake: Early on, after Clary blasts the demon with a homemade explosion that blows a huge fireball across the kitchen and blasts out the window, there is no sign of anything being burned, not even the curtains. The kitchen is only in a slight shambles and there are small fires burning in isolated areas that never spread or char anything.
Revealing mistake: When Roderick confronts the monk, a plastic outline can be seen around the part of the monk's hair that has been shaved off.
Revealing mistake: When Smaug confronts Bilbo and weaves around the gold in his lair, as the dragon asks "What else do you claim to be?" his tail passes through one of the pillars (audience's left).
Revealing mistake: When young Barry walks into his house and discovers his mother's murder site, he drops a book on the floor and a birthday card falls out. The book opens when it hits the ground and is towards the middle of the book, yet the pages are completely blank. (00:01:35)
Revealing mistake: In the funeral scene where Dr. Viper Lady is videoing Logan fighting, she starts lowering the smartphone, but the "faked" image on the screen doesn't change to match her arm dropping down.
Revealing mistake: When Walter is floating in the water, his shoulders are well out of the water because Ben Stiller was wearing a lifejacket under his shirt. In real life, he'd be up to his neck and have trouble keeping his head above water.
Revealing mistake: When Oz first meets the Munchkins, some of them begin flipping down some stairs. The animation of this is very jerky and noticeable. (01:20:30)
Revealing mistake: At the end when the drone crashes in front of the car and the soldier gets out you can see the footprints in the sand from previous takes, in the exact spot where he steps.
Revealing mistake: When the 47 Ronin write down their names to swear fealty to the mission, they are cutting their thumbs on the swords to imprint their fingerprints on the document. The mistake is that they use the blunt edge of the sword to do this.
Revealing mistake: After Paul shoots the monkey he picks it up to put it in a box and the "dead monkey" is fake. (00:51:56)
Revealing mistake: Close-up views of Billy riding Allie on the mini-bike (trying to escape the men following in the Jeep) did not include the lower half of the mini-bike; they were probably on a platform/trailer being pulled by a car. A 12-year-old (?) boy would have difficulty steering and maneuvering a mini-bike with a rider similar in size/weight and would have undoubtedly wrecked when he turned his body around from the waist up to look in back of him at the tailing Jeep. Billy also kept turning the throttle. (00:25:40)