The Dancing Crab in Washington, DC (off of the Tenleytown/American U. red metro line) is simply my favorite restaurant in DC. Every time I go to DC I go to the Dancing Crab. I assure you that when you visit you will leave smiling.
Once you get to the top of the metro escalators you will be on Wisconsin Ave. (no coincidence to my love for Wisconsin), you will surely be confused on which direction to start walking but my trick is that the dancing crab is always down the hill a bit. Look for a hill and walk up it an then down and you will see it.