Jolene for Catwoman!
Chris Nolan has not indicated he even wants Catwoman in Batman 3 but I think Bruce needs to experience some sexual attraction after Rachel Dawes. The obvious choice is Angelina Jolie and WB wants a safe bet so they'll probably offer her the moon if Selina Kyle is in B3. Although, I'm a fan of Angelina, I think casting her would be been there, done that-she doesn't need the role.
Jolene Blalock would be a GREAT choice- check out Jim Lee's Batman HUSH graphic novel and I swear Catwoman is a dead ringer for Jolene- the cheekbones, the lips, the slim/shapely body type. Catwoman is Batman's equal and she plays mindgames with him so they shouldn't cast a young girl like other favorite Megan Fox. Jolene, like Angelina, is 33 years old and has the necessary gravitas to pull it off- she would sizzle on screen with Christian Bale.
If Catwoman is confirmed for Bat 3, Jolene should make a short film audition of herself as Catwoman- the costume, dialogue, etc., spends some bucks to make it look good and have her agent send it to Nolan. Val Kilmer made a music video of himself as Jim Morrison for Oliver Stone's Doors biopic, Elijah Woods made a video dressed as Frodo for LOTR, Tobey Maguire worked out and shot a fight scene for Spiderman and Jack Earle Haley dressed as Rorshach for Watchman- worked for all of them! It would be a gamble for her but fortune favors the bold! BUT if Angelina becomes interested in the role then sadly for Jolene fans, it would a moot point.