Christopher Nolan Meeting Actresses for BATMAN 3

Chris Nolan has put the call out to fill two female lead roles in the third installment of the Batman franchise, The Dark Knight Rises, to be released July 20, 2012 by Warner Bros.  

Deadline is reporting that one of the roles is to be a love interest for Bruce Wayne and the other a villain. The actresses are: Rachel Weisz, Naomi Watts, Blake Lively, Natalie Portman, Anne Hathaway and Keira Knightley.

As usual, not much else is known about the characters other than that.  This leaves the question, who you would you rather see making out with Christian Bale or attempting to beat him up.  For some reason, I always attribute women with dark hair to be better suited for villainous roles, but that is just me.  

What are your thoughts?