Thai Hut
Thai Hut, 408 South Van Dorn Street, Alexandria, VA, 703-823-5357 (Metro Trip Planner - opens in new window) [openlist | Yelp]
Another of the Van Dorn St. entries on this list. Not fully consistent, but the peaks are high. I love the Crispy Fish in Black Bean Sauce, although the other whole fish dish is not so great. But order the fish, plus the Mee Krob and the Nam Sod, and you are in for a treat.
Cheap rents, easy parking and highway proximity have made possible places there like the Thai Hut on Van Dorn Street, where I go now to find my favorite mee krob.
"Ethnic Goes Exurban: Washington's Sprawl, As Told Through Its Migrating Restaurants," by Tyler Cowen, The Washington Post, September 3, 2006
Update: I believe this place is now closed.