I finally tried the ma la dishes at Great Wall on 14th St NW. Their menu is 3/4ths American-Chinese dishes, but the last page has the Sichuan dishes that make this bare bones take-out place worth trying. We did carryout and waited only 15 minutes for our bag of spicy treats.
Mapo Tofu $8.95 Soft tofu with ground beef, chili and Sichuan peppercorns.
Dan Dan Noodle $7.95. Fiery mixture of chili, Sichuan peppercorns, scallions and ground beef.
Baby pak choy with garlic $8.95. Not bad, but I liked the baby bok choy with garlic at Mark's Duck House better.
Ma La Wontons $5.50.
Everything was good, although the last bowl of Dan Dan Mein I had at Sichuan Pavillion on K Street was definitely hotter. We ordered enough to share and still have leftovers. The next day I boiled some dumplings and mixed them in the leftover mapo tofu. Delicious. If you like Sichuan dishes and don't feel like trekking to Rockville, Great Wall is a solid alternative.