Just saw 500 days of Summer. It is a very good flick. Subject matter aside it has a perfect pace and I loved the non-linear narrative. Some fun uses of animation as well. As far as the story goes it will hit home with many men who have any sort of monogamous inclinations. It is amazing how one girl can influence your life even after they are long gone. This is of course no fault of the girl's but rather the boy torturing himself as his expectation falls short of reality.