I didn't see you post where you were living in the area, but Drapers Cigar is great in DC, but apparently they don't allow smoking in that shop any more. 640 14th Street NW (at G Street NW), Washington, DC 20005
They opened a new location in Bethesda that has a nice lounge and a great selection. 4916 Del Ray Avenue, Bethesda, MD 20814
If you want to smoke in DC, I recommend you go by their 14th street location, pick up some cigars, and then head around the corner to Shelly's Back Room Cigar Bar/Restaurant to smoke and have some good food if you are hungry. The Bacon Blue Cheese Burger is great, as are most items on the menu. 1331 F St NW, Washington, DC 20004
If you are not near any of those areas, let me know where you are living and I can give a closer recommendation.