Oh, there's a TON going on here in DC. In fact, Kojo Namdi just had a great panel discussing the current startup climate here in DC. If you have time you can read the transcript here:
http://thekojonnamdishow.org/shows/2011-02-22/small-business...
If you don't, here's a few links to get you started:
http://www.meetup.com/DC-Lean-Startup-Circle/
And follow these users on twitter:
@kevindewalt
@corbett3000
@mmayernick
@skeevis
While I'm at it, who else is good to follow around DC? Any DC people here on HN have any recommendations?