It was such a good movie that, for me, im disappointed because I know that if there is another movie, there is no way it will be as good as this one and no one will be able to replace Ledger.
It was an awesome movie, saw it in IMAX the weekend it came out, insane! I'll probably get the blu ray sometime this month. One of the few movies i'd actually buy.
Not if you accept Dark Knight as the Climax of Christopher Nolan's Batman adaptation. Batman Begins was the rise, Dark Knight was the climax, the third would naturally be the collapse.