I've already seen one reference to this on my friends page, so I assume the cat is out of the bag, but in case you haven't stumbled upon it yet:
Dr. Horrible's Sing-Along Blog It's essentially a Joss Whedon-written supervillain musical, for those who are into one, two, or all three of such things. You can read about the impetus behind the project by clicking the "Read the Master Plan" button on the homepage.
If you aren't yet hooked on the idea, allow me to say that the principal players are Nathan Fillion (Mal from Firefly/Serenity), Felicia Day (of
The Guild), and... well... someone we all know and love. Even if it was a dick move on his part and that's why he's paying for your meal. Prick.