I totally buy Angelina Jolie as an action star. For me, there are some women who can pull off the action movie, and some who can't (sorry Mila Kunis, but you should stick to comedy).
First of all, Jolie kicks some serious butt in this film. I can't describe the plot too well without giving too much away, but I will tell you this: it really keeps you guessing from start to finish. It starts out with a Russian walk-in to the CIA saying that an agent named Evelyn Salt will kill the Russian president the next day at a funeral. And guess who Evelyn Salt is? Angelina, of course. So, she kind of goes all panicky and runs for it. It's at this point that the movie really takes off, and it doesn't take that long to get there. I appreciated that.
I found the supporting cast to also be terrific. Liev Schreiber plays Salt's co-worker/boss at the CIA and their relationship is very brother/sister. You get the sense that over the years Evelyn Salt derived a lot of comfort from that. Chiwetel Ejiofor plays the FBI agent brought in to oversee things, and I enjoy whenever he pops up in films. Maybe it's because he was in "Love Actually" and who DOESN'T love that movie?
So on the CWeave scale, I rate this movie a solid 7. It could have used more humor (I do enjoy a good action comedy), but the acting was steady, the action harrowing, and again, Jolie was a total badass. And bonus points for her, because at one point, she disguises herself as a man! Woot!