Angelena Jolie as Evelyn Salt, in a female equivalent of a Jason Bourne role.

Rating: Null/10 (2 January 2011)

We watched this on DVD (theatrical version) with Emily, who had seen this movie a couple of times already. But she noted that certain key points in the movie were different, including the ending. After reading a bit, it seems that there are at least three versions of this movie, "Salt."
The movie opens "two years earlier" in a prisoner exchange with N. Korea, where they had been torturing Angelina Jolie as Evelyn Salt, to get her to admit to her role as a spy, but she insisted that they were wrong. Out, and back in the USA, we see her working for the CIA. Then, as she is about to leave work to go celebrate her anniversary, a Russian comes in and says he knows about a plot to kill the Russian president on an upcoming visit, and further that there are quite a number of Russian spies implanted in the USA culture, living as Americans but planning an eventual destruction of the USA.
Then he says the spy's name is "Salt. Evelyn Salt." That gets her on the run, a journey which doesn't end for the entire movie.
I like Jolie as an action hero. Jason Bourne has nothing on Evelyn Salt, and we see her get out of some very sticky situations. The topic is current, as during the past year some Russian spies living here had been discovered, and deported. The extent of the story presented in this movie is very far-fetched, but makes for good entertainment.
July 2019 edit: We watched it again after 8 years, this time on the BluRay version I bought a while back, again it comes across as a highly improbable but exciting and entertaining caper.
SPOILERS FOLLOW: As we see Salt run we wonder if she really is a spy planning to kill the US President. But we also see she never kills people, only wounds or disables them. Until she comes upon the Russian spy hideout, where she kills all that are there. So we figure she really is a Russian spy, implanted for a long time, but she has come to realize their mission is not a good one, and now she is doing what she can to stop it. In the climax of the movie the POTUS is in an underground safe place, guarded by trusted Liev Schreiber as Ted Winter, but he turns out to be a traitor. He is trying to start a nuclear war, with Iran and Israel as prime targets, and she has to stop the launch sequence. In the end, still not knowing for sure what she is, she is allowed to escape by jumping out of a helicopter into a lake, and as the movie ends we see her running through the woods. This sets up a sequel, as she had explained that there are lots more embedded Russian spies.