Best: Sarah Walker/Yvonne Strahovski
Chuck contributed many great characters that will be remembered fondly, like Morgan (Joshua Gomez), the quintessential best friend, Casey (Adam Baldwin) the gruff sniper with the heart of gold, and the aptly named Big Mike, the Buy More head honcho.
The real success of the series though, was Yvonne Strahovski as Sarah Walker. Over five years she went from handler to love interest to supportive girlfriend and finally supportive wife, but her sheer badass-ness stayed the same. Strahovski was game since episode one, willingly appearing in skimpy outfits to please us men at home (thank you, Yvonne) while displaying some real dramatic and comedic chops along the way.
We're betting Sarah Walker goes down in history with the likes of Sydney Bristow as one of TV's premier ass-kicking leading ladies, and we're hoping that Yvonne walks away from Chuck with a great career waiting.