Heath the next Joker?

heath ledger as joker seems to me is a bad idea, i mean the last big movie he wasw in he was a gay cowboy. that makes me less interested in the next batman film. i say they get denis leary to act as joker, hed be perfect. because the joker was a comedian gone crazy want he? i can see denis totally pull that off, hes a comedian, and he can be crazy. anybody agree with me? post something please.