Revealing mistake: When Grant tells Lex and Tim about the breeding he then gestures to the dinosaurs' footprints. Some of the footprints are very square in shape and have obviously been stamped in the ground. (01:27:35)
Revealing mistake: The two Jeeps running during the tour are supposed to be automatically moving along the track in the road but several shots reveal there is nothing connecting the Jeeps to the track.
Revealing mistake: When the Dilophosaurus spits at Nedry, you can see the smoke from the gun used to shoot the spit in his face, top left of screen. (01:10:50)
Revealing mistake: When Ellie runs from the Raptor the stunt double who runs for her has on a wig that looks nothing like her real hair. It just looks very fake. (01:35:00)
Revealing mistake: When the baby dino is hatching you can see light from a hole below the egg. This allowed them to push the fake dino through the fake egg shell.
Revealing mistake: In the sequence when Lex almost falls from the hole in the ceiling, she looks straight back up at the camera. Rather than cut away from the stunt double at this point, they actually bothered to CGI the actress' face over the top so they could use the sequence right through. Unfortunately you can tell what's been done. (01:51:40)
Revealing mistake: When Dr. Malcolm gets thrown through the toilet door by the T-Rex, it is most obviously a stuntman that lands on the ground and gets covered in palm leaves. (01:04:40)
Revealing mistake: In the shot immediately following Ellie turning on the circuit breakers when the raptor attacks her, we see a light bulb touching its head. There is smoke appearing where the bulb is in contact with the raptors head, the power has been off for a while the bulb would not be that hot after being on for just a few seconds. (01:39:35)
Revealing mistake: The T-rex does not leave or make any footprints in the soft mud during the attack on the car.
Revealing mistake: During the whole scene of the T-Rex attacking the Explorers you see an illumination that moves from place to place. Sometimes the illumination is in the deep woods, and then it is behind the dinosaur when it is next to the vehicle. When the T-Rex first walks up and sniffs Tim and Lex's Explorer you can even see the light to the left of Rex's head. Since the power is out, no lights are on except the vehicle headlights and they aren't making that much light. Also, there is no moonlight since it is pouring with rain. (00:58:00 - 01:07:00)
Revealing mistake: In the famous kitchen scene, one of the Velociraptors leaps onto one of the counters and knocks over a metal pot with its left foot. The metal pot passes right through the CGI foot. (01:50:35)
Revealing mistake: When Alan and Tim climb down the tree to escape from the falling car, you can see cables along the bark of the tree below the car as it falls. (01:14:20)
Revealing mistake: When Tim gets electrocuted and falls back from the fence, look closely when he reaches Grant and you will see a red stunt crane in the background.
Revealing mistake: Wile driving away from the dinosaur Malcolm tells the driver to go fast. The stunt driver is very noticeable - he has a bigger head and way more hair than the actor.
Revealing mistake: When Ellie is running to the shed, the same clip of her jumping a tree is seen.
Chosen answer: Yes. The first opening day of Disneyland in California was catastrophic. The pavement was fresh and the sun was so hot high-heeled shoes actually sunk into the walkways. Counterfeit tickets were made, resulting in more people than the park had room for. They ran out of food and drinks. Bathrooms clogged and shut down. Many of the rides broke down on opening day. The Storybook Land Canal Boats had to be pulled by cast members in rubber boots. At the time, there were no guide rails for Autopia; some of the cars crashed into each other, making them inoperable. A gas leak in Fantasyland lead to the land being temporarily closed for part of the day.
David Yard