2. Jason Bourne (Matt Damon) - The Bourne Identity
This is a gimme, right? There have been four relatively recent movies on him and the whole point of the films is his figuring out his past. Before mentioning more, let's ignore the books because the films were much different. Bourne wakes up on a boat, has no idea who he is, and slowly learns more and more about how he was trained to be the ultimate assassin. I'm going to probably get some people mad, but all I recall is he was a captain in the army, volunteered for a CIA program that made him bad-ass, and successfully killed a lot of people. It would be interesting to see him run through the missions as a self-aware, cold-blooded killer before he became an amnesia-ridden, cold-blooded killer.