The central question of Salt: Is Angelina Jolie's Evelyn Salt a double- or triple-agent. While this puzzle was intriguing enough to keep me engaged, the true mystery is how a woman who weighs all of 87 pounds can perform the feats of derring-do and don't she does. Early in the film, Jolie's Salt throws herself off a br...idge onto the top of a passing truck below. That she doesn't bounce like a penny off of it and onto the highway is beyond me ... but then much of the action in this film is beyond reason. This makes it exciting and instantly forgettable fun.