I'm late talking about this (it's all over the web now), but if you read this blog then I suspect you'll like Dr. Horrible's Sing-Along Blog, a three-part online superhero and supervillain tale created by Joss Whedon -- the guy who made Firefly, and is therefore a genius.
Oh-- did I mention it's a musical?
Seriously. You might think that would blow out the cheese factor, or make it squirmy to watch, but in fact the songs are catchy, well-done, and add a huge amount to the humor of this satirical look into the mind of a supervillain who just wants to find acceptance, even if it's among other supervillains.
Part I and II are up now, and Part III goes up at midnight Eastern time tonight. They'll be watchable for 24 hours, and then go to DVD. I might buy that disc; I can imagine the extras would be worth the price alone.
Seriously. Stop reading what I'm writing and go watch this. You'll thank me.
Added note: please don't discuss Part III (or any Part) spoilers in the comments. Thanks.