Revealing mistake: Vic jumped onto the roof of the white van while it was moving. The van driver started weaving to get Vic off the roof - but Vic could not be seen at all when there was a front view of the van. Even if Vic were lying on the roof, at least part of him should have been visible. (01:04:04)
Revealing mistake: Near the beginning of the movie, there does not appear to be a curtain (or window) on the left side of the screen (e.g, when Samantha is sitting on the couch), but there is near the end when Chloe enters the now-empty room. The use of a green screen seemed apparent throughout the movie. (00:04:19 - 01:23:04)
Revealing mistake: The nefarious villain has just revealed to Prince Charming that he has kidnapped the princess, and shows her to the crowd as a big burly smurfy monster is holding her. The crowd in unison gasps and looks horrified...except an extra who just can't keep a straight face. (00:07:35)
Revealing mistake: The "rain" came straight down in evenly-spaced vertical lines; this was not "natural" rain. (00:27:22)
Revealing mistake: Men of the Department of Sanitation are picking up Lita's body from her house. The body bag she is supposedly in moves so easily, you can tell it is very light and contains nothing very heavy, much less the weight of a body. (01:03:05)
Revealing mistake: Tom drives at least two differently equipped Ford 4x4 Supercrew trucks. In particular, there are two different grille guards, with one being smaller and less protruding than the other, as well as less-menacing looking. Although inconsistently used, the switch to a grille guard that can cause less damage is used at the gas station when Tom runs into the guy who tried to help Rachel get away from him and when ramming the rear-end of Rachel's Volvo. One truck has fog (or running) lights below the grille guard, making the two differently-equipped trucks more noticeable/discernable.
Revealing mistake: When the black cat was going up the staircase and got to the first landing, it turned its head to look directly at the camera, then continued climbing the staircase. (00:08:13)
Revealing mistake: The candles on the long dinner table are numerous and clustered, but linear in front views of people seated at the table. Based on how the candles are disorderly arranged, it would not be possible to show a couple or few candles spaced apart in front of one person. (00:05:35)
Revealing mistake: When the door is kicked in, it does not sound very loud or like a typical door smashing. An interior view shows the door is about half the width of a standard door and a 3-4' board can be seen falling vertically along the door frame/ wall (then disappears). Instead of hearing someone kicking open a door, the sound more accurately matches what happened: a thin door breaking through a board holding it closed! The "breaking in" scene also has some "stupidities." Stewart (without first trying to see if the door was not locked) uses a cordless drill on the door's lock and a second man then uses his right leg to kick it in (without first seeing if the drill unlocked the door). A third man brought a crowbar, which could have easily eliminated the need for someone to bring a drill or for one of the men to risk a foot/ leg injury by kicking open a door. (00:02:11)
Revealing mistake: When De Niro/Grandpa falls down the roof and hangs on to the drain, he is replaced by an obvious stuntman with a wig and thinner build.
Revealing mistake: It looked like Theo's gold and white checked shoes were a few sizes too big and wide to make it easier and quicker for Laura to put them on her, but Laura still had some difficulty slipping on Theo's oversized shoes. The material even folded down around the ankle when Laura was putting on Theo's right shoe. (00:03:42)
Revealing mistake: Initially, the gallon plastic water bottle Joey was bringing to Hamby looked almost full. However, the ease at which he raised it into the air (by his head), "hollow" sound made when Matt took it from him, and the way it tilted to the side when being dropped down the hole are indications that the water (and its weight) had been removed for most of the scene. When Joey dropped a plastic bag containing a bologna sandwich, chips, and a soda pop down the hole, it went straight down without tilting.
Revealing mistake: Although it appears that Edgar (and later Norman) put his eye up to the hole in the wall to look into the opposite room, the eye is obviously fake. Too much of the sclera (white part of the eye) is showing and the upper eyelid is too far above it; the upper eyelid typically reaches or partially covers the top of the iris (colored part of the eye). Also, the eyelashes go downward instead of being curved upward. (00:18:05 - 00:19:49)
Revealing mistake: Eden's (or her stunt double's) dismount from the horse looks real, but her jumps off the platform to the ground are so soft with uneven foot landings that she has to be hoisted down. (00:11:11)
Revealing mistake: In the scene where Dave (Alan Tudyk) is brushing off Sid (Tony Hale) at the reunion, the camera from slightly behind captures jaw movements that don't match his speaking, and he continues speaking when there is no jaw movement at all. (01:47:00)