This may sound a bit odd, being posted on a MovableType blog, but I've signed up to go to WordCamp 2007.
1) The blog I manage at work runs on WordPress and I want to know more about how to make it do its thing.
2) The current speaker roster includes Matt Cutts, Om Malik, Dave Weiner, and a bunch of other interesting people. That's more than worth the price of admission ($25!!!) right there.
It would be better if the event took place on weekdays instead of a weekend, but other than that, what's not to like?