I knew that The Dark Knight was not going to be an origin story of the Joker, but I expected Nolan to at least have quick flashbacks or cryptic clues given to the Joker's origin. Maybe such methods are still in the film to hint about the Joker's past, but Nolan's words leave me wondering what he is really up. He mentions that Joker's origin is thrilling and an important element but that he wanted to deal with Joker's rise not his origin. The Joker's origin in The Killing Joker, which is the definitive take on the Joker since there is no other acceptable origin, is what makes the Joker Batman's equal and opposite. Nolan not at least hinting at it, could really dampen the Joker's greatness. Hopefully Nolan will at the very least have some passing reference to the Joker's origin or hint at his origin being revealed in The Dark Knight. I mean the film does not need to be an origin story of Joker, to have his origin in it. It not in The Dark Knight I hope the next film will contain Joker's origin. See link below for details.