Nathan Fillion pretty much ratchets up my pulse rate no matter what he's doing. But now he's playing a mystery writer! OMG! I'M a mystery writer, too! In case you hadn't noticed. That's my book cover right down there. : )
My favorite funny moment on Castle so far: Fillion dons a space-cowboy costume for Halloween in a nod to his character, Mal, in Firefly. While the Firefly theme plays in the background, his daughter, Alexis, tells him: "Don't you think you should move on?" Sorry, Alexis, but there are lots of Firefly fans who still haven't moved on since its undeserved cancellation.
Sigh. At least we have Castle.