I was reluctant to watch this film at first. Not having much in the way of a known cast. I am not a huge fan of "bugs in science fiction", so, that was strike 2.
I regret waiting as long as I did to watch this film. It is one of the most engaging pieces of Sci-Fi I have seen in a long, long time.
This is one of those films you could watch more than once, and it won't get old.