October 20, 2008 at 03:00 PM EDT

Okay, maybe she’s not the most underrated, but she’s definitely in the top five. I’ve always liked her on Chuck — hell, what’s not to like? — but it wasn’t until last week’s episode, “Chuck Versus the Break-Up,” that I noticed just how finely she can modulate her performance as super-spy Sarah Walker. Just look at this clip (though, if you haven’t seen the episode in question, there is some SPOILERiness within):

The way her face shifts, ever so slightly, when Chuck isn’t looking, moving from heartbreak to sadness to resignation in the matter of seconds… that’s top shelf, man.

Who else do you think doesn’t get the credit she deserves? Which other actress is, while no one’s paying attention, knocking it out of the park?

More on Yvonne Strahovski :

Ask Ausiello: Scoop on Oct. 21’s Yvonne Strahovski-vs.-Nicole Richie episode of Chuck

Yvonne Strahovski’s Sarah leads EW.com’s photo gallery of 30 top TV and movie spies

DVD Review: Chuck, season 1

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