Actual post-graduate theses have been written about how Buffy demolished the traditional horror story. It's true -- especially when you ponder a convention-bending episode like "The Body." At the same time, creator Joss Whedon is a classicist who knows his Hollywood history, a fact that emerges in composer Christophe Beck's music. Without the visual aid, this series overview tastes of a far older vintage than the late '90s/early '00s. You half expect Bela Lugosi to creep up behind you.