Solid Thai in Chinatown.
I often turn to Thai restaurants in DC for when I'm craving Asian and am too tired to cook. Thai Chili is one of my top options, as they offer free delivery (I believe you have to order at least $15 worth of food, which isn't hard to do). Their Pad Thai, everyone's favorite Thai noodle dish, is satisfying, though not as great as I've had in Thai restaurants elsewhere. They are good when it comes to curries, however, as I'm a fan of their Red Duck curry and their Penang curry. It usually turns out to be a good deal with Thai Chili even if you're ordering for 1, since 2 entrees or an appetizer and an entree are large enough to have leftovers for the next day.