Indonesian
Mostly I save up my Indonesian urges for when I am in other places, most of all the Netherlands. But if you are going to order Indonesian, no matter where you are, go for the Rijstafel (Ricetable), which offers a wide variety of dishes to two or more diners.
For Indonesian the best bet probably is Café Asia, in Rosslyn.
Ivy's Place web site says they serve Indonesian and Thai food - have not been. web site, 3520 Connecticut Avenue NW, Washington, DC, 202-363-7802 (Metro Trip Planner - opens in new window) [Washingtonian | WaPo | City Paper | food-plan | Don Rockwell | openlist | Yelp | Gayot]