The movie was awesome. As usual (and you can tell this from the trailer) the humans were the bad guys, which is depressingly plausible, but other than that I loved every second. I was literally riveted to the screen.
Okay, Okay, some bits were a little predictable, but so what. It was enjoyable, which is what I want when I go to the movies. I recommend it to anyone who loves sci-fi. My Doctor Who friends would love it.