I saw this at midnight. It was truly worth the wait. Heath Ledger's performance as the Joker was excellent and Christian Bale showed us (again) that he truly is a favorable Batman.
I will say this, it was darker than I initially expected. It was deeper and darker than Batman Begins. Mostly it was the Joker scenes. They squicked me to a whole new level and remind me why I would never want to run into a man like him.