Joss Whedon, creator of Buffy the Vampire Slayer, Angel, Firefly, and the upcoming Dollhouse, has created an interesting new project. It is a 42 minute web-based musical called Dr. Horrible's Sing-A-Long Blog. It looks to be typically hilarious and will debut for free on the web in three installments on July 15, 17, and 19. After that, you may have to pay to download it or wait for it to appear on DVD. I have placed the teaser trailer for the project over on the right for those interested in checking it out. As fans of Buffy know, Whedon has quite an affinity for musicals, so this should be entertaining.