Finally got a chance to check out Steve's recommendation for Oohs and Aahs (U Street and 10th, right across from the U St./Cardozo Metro station).
Wow -- this is a great place, exactly the sort of hole in the wall find that makes Chowhound such a terrific resource. I had the grilled shrimp with peppers and onions, served with yams and collard greens. Everything was suffused with obvious love. Oh, and it was scrumptious, too. In the 40 minutes that I was there, virtually everyone who walked in, or called, wanted the pork ribs. But they didn't have any today. Many "settled" for the pork chops, which were *extremely* alluring.
Kudos to India Willson, who not only knows what she's doing, but also knows that she's got something special here, and is a warm and gracious host, to boot.
P.S. Steve was completely wrong about one important detail: There are five barstools, not four.