SilverlightDevCampDC is an upcoming gathering (November 3rd, 2007) in the Washington DC area, inspired by BarCamp, to build Silverlight applications. It's organized by volunteers & Silverlight enthusiasts, with attendance free to all. More info at http://www.barcamp.org/SilverlightDevCampDC

Also, Central Maryland Association of .NET Professionals (CMAP) will be holding the Fall Edition Code Camp on October 13, 2007. The Code Camp will be held from 9am - 5pm in Columbia, MD. More info at http://www.cmap-online.org/CodeCamp/