I've been looking forward to seeing this movie ever since I saw the preview, and I finally made it out this weekend. And I loved it. It was really emotional, everyone did a great job acting (including Anne Hathaway, who I was a little nervous about), and it somehow managed to be incredibly sad and happy at the same time. It just seemed very honest.
Movie still from IMDB
Also, the wedding was awesome in a crazy eclectic, do it yourself/with your friends kind of way, and the mini-dress the bride changed into for the reception was so cute that I've already wasted 40 minutes attempting to search out more information about it (no luck and I can't even find any pictures). If you haven't seen it, I highly recommend it.
One warning - it's shot in a home video style, which I appreciate intellectually, but I really wish they had been using a steady cam. I was a little woozy part way through, from all the jumpiness. It might be easier to watch it on the small screen.