I am coming to DC on a trip and am looking to get the best of what D.C. has to offer in inexpensive restaurants that are OK with a small baby. I know D.C.'s Ethiopian restaurants that are some of the best around but am also looking for some other interesting options. I'm particularly interested in Central or South American restaurants (some people have recommended Ercilia's and Rinconcito on this board, are they good?), restaurants with good crab (without going all the way to Baltimore), decent BBQ joints (Lefty's is written up on this board, is it the best? how far is it from D.C.? are there places in the city that are decent?), and other D.C. ethnic restaurants that are really outstanding.