In increasing order of distance (and would you believe it, quality) from 21218:

Mango Grove (6365B Dobbin Road, Columbia, MD. 410-884-3426)
Closed Tuesdays.

Udupi Palace (1329 University Boulevard, East Takoma Park, MD 20912. 301-434-1531)

Woodlands (8046 New Hampshire Avenue, Hyattsville, MD 20783. 301-434-4202)

Madras Palace (8839, Greenbelt Road, Lanham, MD 20770 301-552-3353(Opposite NASA, next to K-Mart))
Best compromise between drive time, price and food quality. Closed Mondays.

Madras Palace (74 Bureau Drive,  Diamond Square,  Gaithersburg, MD.  301-977-1600)
The best buffet I have had. Try the Falooda.

Ofcouse, I would be remiss if I didnt mention #5B, Dell House. Mango Milkshakes!! In the house!!.

Mail additions to veera@jhu.edu