So I watched and I like it. It was a good movie, far from being the best movie ever as the internet wants to claim but it was really good.
And I liked the Joker, however I still missed some things. The spontaneity of the comic/animated Joker is put away somewhat in favor of "schemes", like the hostage/clown situation or the two boats stuff (with results that were frankly very predictable). Too much emphasis on morality with his actions, but I guess that was because of the two-faces character more than anything . However the Joker smile is just terrible, I would personally had left the scars open like in Pan's labyrinth, that would have been awesome, I also supposed this is why I couldn't see much of the Joker I'm used to know in Ledger's character, not enough smile, the make up didn't do much for me.
Oh also, Return of the Joker is the most awesome animated movie just for
this scene. If I'm to believe the youtube comments the movie was heavily edited which is a damn shame, I saw this version some time ago without editing.