In the event that at some point someone is looking for interesting places to eat in Beijing, here are some recent finds of mine:
Hunan Lotus Garden (Yu Xiang He) (Chaoyang District, 6 Zuojiazhuang West Road): An acquaintance of mine from Hunan who lives in Beijing lamented the absence of authentic, wholesome Hunan food in the capital and decided to do something about it--he and his wife opened this place a couple of weeks ago and already it is often packed with people, despite the absence of advertising. Most ingredients are shipped in from Hunan, and all of it is made without MSG and with no non-natural ingredients. If you like things spicy, this is a great place.
Makye Ame Tibetan Restaurant (2/F Xiu Shui Nan Jie--just behind Friendship Store): A lovely restaurant, rather hidden on the upstairs of a retail building but easily reached by the stairs in front. The decor alone makes it worth a visit, though the cuisine is also first-rate. They have the full range of Tibetan specialties, and will not serve something that they cannot make fresh (so occasionally yak is off the menu). The lamb cooked on stones is excellent, as is the yak-vegetable rolls. Tsampo is available in an exquisite yogurt sauce. Not too expensive, either.
Southern Island Fishing Village (6 Gongren Tiyuchang West Road): This is the place to go for Cantonese dimsum. Dimsum can be had in Beijing in the hotels on the weekends, but the food there is rather pricey. This place is their equal if not better in terms of quality, though the prices are a mere fraction: lunch for 10 with way too much food was a mere Y30 per person, less than US$4 per person!).
If you go, enjoy!