Technically it is Buffy/Angel week, but all things Whedon have a way of just melding together into one big stew. So it's a fortuitous bit of timing that a trailer for Dr. Horrible's Sing-Along Blog was released this week. For those still unaware of just what Dr. Horrible is, I think it was summed up best by Nathan Fillion in a recent interview. It's about a super-villain (Neil Patrick Harris) who falls in love with a girl (Felicia Day), and the super-hero (Nathan Fillion) who blows it for him. The super-hero is kind of a dick. And... it's a musical. I think it could be very much more than that. More on that, and the new trailer, after the jump.