The District of Columbia has gotten a very nice revamp. According to this article from GCN, they didn't add much new content or functionality, merely reorganizing of the information already on the site. One of the major flaws in most websites is that sturcture of the site mirrors the organizational heirarchy, rather than the matching the needs and expectations of the users. This is especially true of some government websites, which, predictably skew much more toward the beurocratic than the usable. The navigation of DC's new site is task-centered, and much easier to get around. It also promintently features access to Ask's natural language search engine.