I don't know why A Charlie Brown Christmas is still my favorite holiday TV special. Is it the hanging-on-for-dear-life tree, drooping southward with its one lone ornament? Is it the Peanuts characters getting their quirky moves on while Schroeder bangs on his piano keys? Is it the Gospel of Luke passage that Linus recites? Is it Vince Guaraldi's familiar jazz soundtrack? Who knows...I do know one thing: it always puts me in the holiday spirit, and it's one of the few Peanuts specials that didn't beat up on poor Chuck too much. It's airing tonight on ABC at 8 PM E.S.T.