In response to Robert R.:
I do agree that "the thing" certainly does have Lovecraftian properties in both films, though I tend to favor the more protoplasmic/Shoggoth-like formation of Rob Bottin's creature in Carpenter's film. Something about the amorphous and gelatinous, occasionally tentacled shapes Bottin's creation exhibits really brings Lovecraft to mind.
In response to The Folklorist: I would never suggest that Campbell was ripping Lovecraft off; the details between the two stories are diverse enough, along with the two writers' different styles, that I don't think one could be mistaken for the other. The similarities in the basic framework and tone of the two stories did strike me, so I had to beckon the question. True enough that Antarctica is an attractive locale for the unknown on Earth, especially back then for many other authors before and besides Lovecraft.
I'll have to read more of Price.