Since everyone was so helpful about the boba tea, how about this: I am absolutely dying for a really good tacqueria with really, really good tacos pastor. tortas would be nice too (I was not impressed with Mix-Tec although their tacos were ok). Also, any recommendations for the best salsa in the district? I have tried Alero, Lauriol Plaza, both good but still searching for the perfect salsa...
If you're willing to venture a bit south on Route 1 in Virginia, Orale (8762 Richmond Highway) does a nice pastor and serves tortas.
My favorite taco al pastor is at La Placita in Riverdale, MD. It is also the best item at the California-inspired Taqueria Poblano in N. Arlington and Del Ray. Available only after 5:30pm.
Oh yum... Tacqueria Tres Reyes on Kennelworth in Riverdale, MD. Fantastic tacos of stewed pork served with green onion, radish, and lemon on the side.