With her uncanny ability to go from kicking ass to fighting back tears and killer (no pun intended) comic timing, Yvonne Strahovski has exhibited more range and talent than just about any other lead on television in the last five years. Full stop. Sarah Walker is smart, strong, sexy and arguably the standout character on a show that has given us Zachary Levi and Ryan McPartlin. And the best part is that she’s a fully-rounded character in the way that “the hero’s girlfriend” almost never is.