Beware there are going to plenty of spoilers in this post if you haven't seen The Bourne Legacy yet.
1. This guy right here! Jeremy Renner. I was one of those who was livid when I heard they were continuing the series without Matt Damon. But I quickly changed my opinion once I saw Jeremy Renner in action as Aaron Cross.
2. And this gal! Rachel Weisz. She is always awesome whenever she joins an action movie. I was immediately hooked as soon as Dr. Marta Shearing came on screen. Rachel plays smart so well (probably because she is super smart :-)). The first thing I loved about Marta was her intelligence, then we see her kindness to both the subjects of the tests and her coworkers, and then we get to see her in action.