Heath Ledger's Joker

Have you seen the newest trailer for the Dark Knight? If not, you must, because it reveals more footage of the Joker, acted by Heath Ledger.
Unfortunatley, Heath Ledger's death has shocked us all. I'm afraid that this may bring the movie down, but what a role to play as his final haunting masterpiece.
the new Joker has some significant changes from the original Joker in both the comics and Jack Nicholsons Joker. It appears that the Joker has face paint instead of white skin, and his smile seems to have been carved onto his face. He also seems to have more messy hair and is not as styled as Nicholsons. He seems a whole lot more crazier, and I kind of like this more. I hope he is similiar to the Joker from the 'Arkham Asylum' graphic novel.