While I agree with Kate Beckinsale, I also have a thing for Amanda Tapping. I think Amanda (as Colonel Samantha Carter) actually made the Air Force Service Dress uniform look really darned good (and that is hard to do.) And then as Dr. Helen Magnus she looked awesome again - even with the hair color change. She's one of the few women who changed her hair color and I can't really decide which I like better - blond or dark. Both are amazing on her!