Roger Ebert on 'The Thing'.

it seems clear that Carpenter made his choice early on to concentrate on the special effects and the technology and to allow the story and people to become secondary. Because this material has been done before, and better, especially in the original "The Thing" and in "Alien," there's no need to see this version unless you are interested in what the Thing might look like while starting from anonymous greasy organs extruding giant crab legs and transmuting itself into a dog. Amazingly, I'll bet that thousands, if not millions, of moviegoers are interested in seeing just that.