Operated by Victor Albisu, whose recent claim to fame is Del Campo in DC. Nothing fancy here, but there's more originality on the menu than your average taco joint. Order at the counter, take out or find a stool at the long "bar" along one side, sort of like TECC.
I had a couple of traditional tacos, a barbacoa and a carnitas. At two for $5 (one for $3) it's a good deal for a tasty soft taco. They stuff 'em pretty full, a little bigger than DC Taco, served properly on corn tortillas. The barbacoa was really flavorful, the carnitas kind of tame, but they have a couple of good sauces that spiked them up.
There must have been one large group in there when I came in (about 1 PM) because the place was packed with eaters and those waiting for their order, though there was no line for ordering at the time. They have a regular production line and it took less than 10 minutes to get my order. A few bites into my first taco and suddenly the place cleared out!
Taco Bamba is located in the Idylwood shopping center, just up Idylwood Road from the shopping center with the Falls Church Whole Foods, along the strip with the Idylwood Grill.