Guajillo
Guajillo, web site, 1727 N. Wilson Blvd., Arlington, VA, 703-807-0840, near Rosslyn, by the Citgo, in the strip mall, 703-807-0840, usually open. (Metro Trip Planner - opens in new window) [Washingtonian | WaPo | City Paper | food-plan | Don Rockwell | openlist | Yelp | Gayot]
It has received consistently good reviews. If you don’t know the real thing, you will be pretty happy here. If you do know the real thing, you will know they are at least making a valiant effort. A quasi-yuppie Mexican place, not a hole in the wall, the mole is probably their best dish. The sauce is excellent though the chicken ends up a bit dry. Check out the amates on the wall.