I would skip Capital City Brewing. The beer is fine but DC has an excellent smaller craft brew scene that has started in the past 2-3 years. DC Brau, Three Star Brewing, and Chocolate City are all much better choices. Here is a recent Washington Post article:
http://articles.washingtonpost.com/2...pubs-breweries. They may be a bit more difficult to reach but it is worth your time if you enjoy good beer. Additionally, Church Key, located on 14th Street, as a very impressive beer selection, offering approximately 400 beers.