OK, I’m a dork.

I’m a dork who loves musicals.

And I’m a dork who loves Joss Whedon (Buffy the Vampire Slayer, Firefly).

So, how in the world do I resist Whedon’s latest work, an internet-only musical called Dr. Horrible’s Sing-Along Blog?

To make it even more inevitable, it stars Neil Patrick Harris (How I Met Your Mother, Harold & Kumar Go to White Castle and, of course, Doogie Howser, M.D.). And yes, I love NPH.

Dr. Horrible’s… is a wonderfully cheesy musical sendup of a wannabe super-villain and his arch-nemesis, with a beautiful woman and accompanying love story for good measure. If you’ve seen the Buffy musical episode Once More, With Feeling, you’ll have a good idea of the musical style (clever lyrics, hummable tunes).

Plus, it’s funny and sweet, and NPH is just about perfect.

Whedon, who’s currently preparing the very expensive-looking Dollhouse for FOX (will he ever learn?) explains the concept behind an internet-only show:

The idea was to make it on the fly, on the cheap – but to make it. To turn out a really thrilling, professionalish piece of entertainment specifically for the internet. To show how much could be done with very little. To show the world there is another way. To give the public (and in particular you guys) something for all your support and patience. And to make a lot of silly jokes. Actually, that sentence probably should have come first. 

The first two Acts are available for free on the Dr. Horrible website. The third Act goes online July 19. If, like me, you find yourself humming the songs after just a single viewing (or you just want to support the idea of original, internet-only content), you may want to buy all three acts of Dr. Horrible… on iTunes; it’s just $4.00 for the season.