Justin Thorp has set up a page on the BarCamp site organizing a DC-area BarCamp. If you're unfamiliar with the BarCamp/un-conference concept, it can be summed up as follows:
"A BarCamp is an ad-hoc gathering born from the desire for people to share and learn in an open environment. It is an intense event with discussions, demos, and interaction from participants. The name BarCamp was inspired as a complement to FooCamp."
If you're interested in helping organize, hit the link below. Also, if you (or your company) is looking to sponsor, there's also a call for sponsors.