Continuity mistake: In the exterior front shots of Elliott's house there are some significant changes to the landscape in different shots. For instance, the two lampposts at the bottom of the driveway change to an entirely different style in some shots, and the huge garden boulders repeatedly vanish and reappear. Also, note when Michael takes off on Elliott's bike to go search for ET, the in-ground lamppost that should be beside the mailbox has vanished, but it reappears when all the government agents are setting things up outside the house.Super Grover
Continuity mistake: When Carol Anne is being sucked into the closet vortex she clearly lets go of the white wicker headboard of her bed. In the next shot, the child (actually a dummy or a stunt double) is seen sailing into the closet, grasping a sizeable section of the now broken headboard.
Continuity mistake: When Brian Schwartz drives away in his sports car, you can hear him shift 4 times. When they show a shot of his car go by, he is only going about 5 miles per hour. (00:48:40)
Continuity mistake: When Mr. Hand shows up at Jeff's house to study history, the bong in Jeff's bedroom alternates between full of smoke and empty. (01:15:15)
Continuity mistake: When De Niro's character gets in the limousine with Lewis' character he has a hurt hand. He wraps it with a handkerchief. As the scene progresses the handkerchief disappears and reappears depending on the camera angle. (00:07:15)
Continuity mistake: When Mac is locked out of the complex by the rest of the team, who think he may be a 'Thing', Childs uses an axe to try and chop open one of the doors, leaving a HUGE hole in the middle of it. Later Childs returns to that same door and the hole is significantly smaller and at a completely different location on the door.
Continuity mistake: After Chuck breaks the liquor decanter and the desk appears free of broken glass Bill says, "Chuck you've got to keep that elbow stiff." When the camera cuts back to Chuck the entire desk appears as it was pre-fight with nothing disturbed, including a now complete and unbroken liquor decanter half filled with liquid. (01:30:40)OneHappyHusky
Continuity mistake: As Gant is pulling the Firefox out of the hangar, it is still very dark, as in pre-dawn. But as the Russian officers are shown shooting and watching the Firefox take off, it is suddenly much lighter outside as if it is after dawn and the sun can even be seen. But it would have taken 30-60 minutes for the light level to change that much.
Continuity mistake: When Jen Moo ambushes Fukoda in his house, he kicks part of the waterwheel's gear against him, jamming it solid and pushing him through the wheel into the river. But in subsequent scenes, the wheel turns again, and it is completely undamaged.
Continuity mistake: When little Buddy and his family are being murdered by the use of Little Buddy's Pumpkin mask, the Silver Shamrock tag on the back of the mask disappears and reappears several times.