There is no way it can possibly be Horrible

This is about the coolest thing I've heard about in a l-o-n-g time: Dr. Horrible's Sing-Along Blog. Written, directed and produced by my hero, Joss Whedon, this "limited internet series" is a musical starring Neil Patrick Harris as the villain, Dr. Horrible; Nathan Fillion (mmmmm!) as the hero, Captain Hammer; and Felicia Day (formerly best known as Vi, a soon-to-be Slayer from the final season of Buffy) as Penny, the love interest. Apparently they've started shooting already (scroll down the page about halfway to read Joss's own description of the project). I promise to update when I hear more, if I can stop squealing about the possibility of Nathan Fillion singing!