Continuity mistake: While Elliott and ET are saying goodbye, in the original 1982 version in the shot facing Elliott, ET lifts his right hand to point his finger at Elliott's forehead and ET's finger glows (note the weird angle of ET's raised right hand), but in the next shot facing ET when he says the iconic words, "I'll be right here," it's actually ET's left hand up by Elliott's face. This was digitally corrected in the 2002 version, so that in the first shot ET lifts up his left hand.Super Grover
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 the boys are riding their bikes trying to escape with ET, all the bikes have single brake levers on the right side of their handlebars, but after Elliott shouts that they should follow him to the forest, there's a shot from the POV of one of the bike riders (we know it's not Greg or Elliott) and he has two brake levers on his handlebar.Super Grover
Elliot: Okay, he's a man from outer space, and we're taking him to his spaceship.
Greg: Well, can't he just beam up?
Elliot: This is reality, Greg.