Holy fucking shit, you guys. This movie blew me out of the water. It's better than anything I've seen in months. It's a great example of storytelling that more movies should use. Every story beat feels right. Not a single scene (that I can remember) rings false.
There's a point in this movie where I thought to myself, "This movie could go anywhere. Anything could happen. I have no idea what will happen next." There is a tiny group of movies out there that made me feel that way, and Chronicle easily goes on that list.
My mind is still settling down (the climax is mind-boggling), so I can't get all my thoughts out, but you should really see this movie. And don't look up anything about it beforehand, if you can. Don't read the Wikipedia page or anything. Trust me, you don't want to get spoiled on anything.