Buffy the Vampire Slayer creator Joss Whedon has just released this teaser poster for his upcoming internet musical, Dr. Horrible's Sing-Along Blog. "It's the story of a low-rent super-villain, the hero who keeps beating him up, and the cute girl from the laundromat he's too shy to talk to," says Whedon. How can it get any cooler? It stars Neil "Doogie" Patrick "Howser" Harris, as Dr. Horrible, Serenity's Nathan Fillion as Captain Hammer, and insanely cute Buffy alum Felicia Day as Penny. [OhNoTheyDidnt]