Have you seen this? My love for Joss Whedon is well established, so I was all over this web musical mini-series. Go watch it, and if you like it (bet you will), buy it on iTunes. Joss support is good.
Edited to add: Curse you, Joss Whedon! How are the rest of us semi-creative types supposed to have any hope when you've got more or less all the talent in the world?