I rather like Riedel's up on Conn. Ave near the UDC metro. Pretty tasty pulled pork, and there are four styles of sauces (KC, Memphis, North Carolina, and one other I can't think of right now) to choose from. Reasonably well-priced - actually, scrap that, considering the fact that it's a nice looking sit-down restaurant (the kind you wouldn't be ashamed to take your parents or a date to), it's dirt cheap.