This makes me slightly nervous. This kind of celebrity casting - "Who's hot right now? Cast them!" - has wreaked havoc on Batman in the past. Witness Clooney, Thurman, Jones, Carrey and Schwarzenegger - topical and hot, but not necessarily the right person for the part.
Jolie's got the right kind of confidence and sass for Catwoman. I just wonder if she'll fill the role, or if she'll rewrite the role to suit her own ends. I think Nolan has the respect of the cast and crew - his vision has delivered not only blockbusters, but good MOVIES. Under his direction, Ledger took a difficult role and reinvented it brilliantly. I think Jolie can do the same...but I remain anxious regardless.