One of the specialties here is Abbacchio alla Romana -- the little salty rib lamb chops that are a Roman tradition in the spring. Done "al forno" -- in a wood oven, you get a big heap of sizzling luscious chops, eaten traditionally with artichokes. Also very good place for wood oven pizza.
My wife and I stayed at the Hotel Valadier on our honeymoon next door to Il Brillo Parlante. We ate lunch at the resaurant on the day of our arrival and we were hooked. The decor was nothing special but the anitpasta and pizza was wonderful. I still dream about the Mozzarella di Bufala. As your knife begins to cut a slice the milk just pours from the cheese. The best I have ever had by far. We ate there 4 times (3 lunch and 1 dinner) out of the 4 night we were in Rome.