Stoic. Noun. A person who chooses to express no or little emotion, even in extreme situations.

Look at this: Kate Beckinsale is, like, the text-book definition of stoic. Despite the extreme situation, she's completely apathetic. I mean, how could anyone parade around a "Chevy Rocks!" event without pumping her fist, belting out Bob Segar tunes, and making out with strangers? And yet, Beckinsale looks indifferent, perhaps even slightly annoyed. She really is an outstanding actress, to be able to hide her enthusiasm in the face of so much Rockin'!