Belvedere Towers Cafe, at the corner of Falls Rd. and Northern Parkway?
It's our favorite take out/delivery place. The food is good and well seasoned, plus they have a few items not found on most menus (momos, chaat dishes, and chili chicken). There's a good selection of vegetarian dishes too. Their selection of breads is above par and always manages to show up hot when delivered, which is always a plus.
Although they bill themselves as a pizza delivery, the Indian dishes are much better than the pizza.
I live in the building, and I have to say that it is very good. Their momos (Nepalese dumplings) are fantastic -- dripping with succulent juice. The Indian food is also quite good, but honestly, I'm not a huge fan of the naan -- it's a little doughier and less crispy then what I would prefer. The actual dishes, though, are quite good, though the flavorings are somehow slightly different than most other Indian places I've been to.
I've had the pizza once and thought it was just ok.
The wings are also surprisingly good!