We have seen a lot of Nathan Fillion in the Geek-o-sphere. He was on Joss Whedon's Firefly, stars in the current TV show Castle, and he won my everlasting respect for participating as Captain Hammer in Dr. Horrible's Sing-A-Long Blog. But this Jimmy Kimmel clip shows that he is also unrepentantly nerdy. And that Means that he has now become my hero!
So draw your lightsaber from your nose and stand behind Nathan Fillion. A hero we can argue Star Wars facts with during our lightsaber fights.