Factual error: When the infected Palmer starts his transformation into the Thing, he has a series of fits and the creature 'falls', or leaps upward onto the ceiling. Watch closely...you can see a piece of paneling also 'fall' upward, when it should have fallen down.

Visible crew/equipment: When Norris and MacReady are climbing down into the crater that has the spaceship in it, you can see in the right corner of the screen a crewmember climb up, then look startled and drop back down behind the ship. Only visible in the widescreen version.

Visible crew/equipment: At the end of the film where Kurt Russell is about to fight 'the thing' you can see the shadow of a guy holding a boom mike on the ground just behind him.