The Purge (2013)
REVIEW: I know a lot of people hate the first movie in The Purge series, but personally I really love it. It's an original horror movie (which is rare these days), and even though it's *just* a home invasion type flick, which I know is why most people don't like it, I love home invasion type flicks so that aspect didn't bother me at all. Plus it's a home invasion type flick with a fresh and unique background to the story, that being the entire idea of the Purge itself.
The movie also had a great sense of atmosphere about it, and the director did a great job with mixing that atmosphere with tension as the movie went on. I know I definitely jumped a couple times throughout, and that's rare these days. Sure, the characters make some stupid decisions, but you need that otherwise there wouldn't even be horror movies to watch. Plus most of the dumb ass decisions came from their annoying-as-anything anti-social dweeb kid so it's a bit easier to swallow when said dumb choices are being done by a kid.
I do wish the movie had gone just a bit further though with the material, had gotten just a bit more wild and crazy, and as you can tell from the previous paragraph I really didn't like the character of the youngest kid (or either child, for that matter), but all in all I do really enjoy The Purge and love revisiting it every year or so when the mood strikes.