Au Pied de Cochon - A late night Georgetown tradition.  Obviously French, try the Croques Monsieurs.  Inexpensive for Georgetown, moderately priced for anywhere else.  Open 24 hours.  1335 Wisconsin Avenue, NW, (202) 333-5440

Kramerbooks & Afterwards - One of the best after midnight hangouts for good, unusual food and people watching.  You'll find books, live jazz and blues music, and singles.  A great place to enjoy a late night dessert and coffee (or cocktail) while flipping through the latest travel book to plan your next escape!  Open 24 hours on weekends only.  1517 Connecticut Avenue, NW  (202)387-1400

Bob and Edith's Diner - The original greasy spoon - great late night/early morning breakfasts.  Open 24 hours.  Inexpensive.  2310 Columbia Pike, Arlington, VA (703)920-6103.  No credit cards accepted.