I like her as an actress, but I don't think Natalie Portman looks imposing enough to be a Batman villain or 'adult' enough to be a convincing love interest for Christian Bale. The people who made "Closer"
did a great job of getting me to look past my perception of her as 'just a girl' and actually see her as a sexy woman, but that was an exception.
And this isn't simply about age. I just think the female lead or villain in a Batman movie should have a stronger presence than a lot of young actresses have and that includes Katie Holmes and Maggie Gyllenhaal. When it comes to casting women, I hope this movie will be a lot better cast than Nolan's first two Batman movies. As either Talia or Catwoman, I think Rachel Weisz would be superb. I'd prefer seeing her as Talia, but you guys are slowly starting to make me come around on the idea of Catwoman in a Nolan movie. I can almost see it!