I've become a regular here since trying their Mapo Tofulunch special (L39). Be sure to ask that they include the cold appetizer of the day (spicy pickledvegetables) with your packed lunch.
If you like spicy, get the Spicy Beef Noodle Soup. Closest thing to the spicy flavors of Sichuan that I've had outside of Sichuan. It'll get your tongue tingling.
Known for hot pot which is fun but not as tasty as one hopes (cooking own meat and veggies in boiling pot on the table). Go down the street to Joe's Ginger for soup dumplings instead...