I've found Christian Bale to be a rather bland presence in the previous films. Nolan's writing has made all of his films shine and more often than not it's the supporting roles that stand out for me. They talk to some considerable length about how the character of Batman will be tested to extreme in TDKR, so I'll wait and see how that is dealt with.
I'm all for Tom Hardy after seeing his performance in Bronson, which is scary-good. Plus he's like, hot and stuff. The biggie for me is Catwoman. I'm not sold on Anne Hathaway as the right choice yet, still being stuck on Michelle Pfeiffer's frankly awesome performance back in 1992. That moment when she dons the leather for the first time in her apartment is iconic to me. I kinda had this sexual fantasy that they would somehow get Karen-O to play Selina Kyle in the new iteration. Ah well.
And the Halle Berry one was like a burp in movie form. Nothing else.