Movie title and year?

I am having a problem figuring out what movie I am thinking of. I just saw it not two or three years ago. It was a fairly recent flick too, perhaps dating to 1997 to 2005. I cannot tell you who stars in it, but it about a team in Antarctica, where a shape-shifting parasite takes on the forms of those who work there. Towards the end, there are four or so people left ,and they are in a hole or small area when one of the men starts to talk, and it was not his voice (i.e. it was the parasite). And it cuts there. It sounds like the Thing (1982) but it was more recent, and I don't remember Wilford Brimley or the ending I am thinking of in the movie I saw. Perhaps a smallbudget remake, or a crappy ripoff of The Thing?