[slade]

Thanks for the responses guys.

Redshifter, you make good points as to why it is a horror movie. But, I also agree with C Roberts, that it is more psychological horror. And, I think my problem with not getting scared is, that I just couldn't get drawn into the characters because of the campy characterizations.

The movie does do a great job of setting up the problem of having to solve this in order to "save the world" even if it means killing ourselves. This did give me a great sense of helplessness that did add to the suspense and terror (if not horror) for me. So, this part did "get in my head" and made the movie emotionally impactful, but on a more psychological level.