Aeon Flux, all 3 underworld flicks, You could count the resident evil movies if you want, Going back a little I would also include 5th element. I could probably think of a bunch more but those are just off the top of my head.
Aeon Flux, while I may have watched it, did not hit me like Salt did. This movie will be watched many times over in the future.
Underworld is something I am definitely a fan of...but that is more because of the entire production. I would not get lost in the movie and gain the sense that the actress could do any of that and didn't when watching it. Don't get me wrong, I want to see more, but I am talking a female lead who really took the role and ran with it.
Resident Evil came damn close...but again, by over stylizing it, it lost that sense of reality.
5th Element, she NEVER looked like she could fight someone else.
Salt succeeded at making a character who took you through all the paces...without tight leather and overstylized fight scenes that just look great.
I respect the role she did because before that, you NEVER saw women portrayed as having muscle like that and being that strong in a movie. She helped a movie like Salt get created in the long run....but I mean movies with a female lead done with this level of attention to detail and level of acting.
Have you watched that movie lately? I remember the hype surrounding it when it first came out and how much they paid her to cut her hair off....but tell us, do you really feel like watching that movie several times?