I have never been a Batman fan; never read the comic books, never really watched the old tv show AND never saw a Batman movie until I saw previews of "The Dark Knight". I was so intrigued by Heath Ledger's Joker, I actually went to the movie theater to see it. I only go to the theater when I really want to see a film. Everytime TDK is on tv, I have to at least watch parts of it. The Joker, in that film, has become one of my favorite movie villains.
It would appear, by the title of this new film, they are trying to draw off that character no? I can't imagine anyone holding a candle to Ledger in that same role. Also, totally on another subject, why is Christian Bale's voice so weird when he talks as Batman? Just my two cents.
TIS
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK
Everytime TDK is on tv, I have to at least watch parts of it. The Joker, in that film, has become one of my favorite movie villains. 
Just my two cents.