I'm a little over a year late to the party but I finally saw this last night (Cinemax). I agree with everything said by those who have seen it so far...but perhaps a little different feeling about the ending.
The movie is well made and quite tense from the beginning. Great job by Russell as well.
My problem with the end:
Spoiler...
They went through all the trouble boarding up the house when they already knew the aliens were getting in somehow without anything opening. To further make this even more head scratching they go through the whole drama of the aliens somehow unscrewing the sheets of plywood put up to keep them out, yet there are already aliens in the house upstairs that simply just mysteriously appear behind Russell. How did they get in??
Same could be said on how they make a last stand together in a locked up bedroom then in a flash a half dozen aliens are in the room with them! Wha, wha, whaaaaat!?
Other than that though the movie is pretty solid and most definitely one of the better alien flicks out there to watch. The twist at the end I saw coming from a mile away as well but that did not detract from the movie all that much.
7.5/10