Delfina - This place has such a reputation that your biggest risk will be that you can get a table, or that you will be disappointed that the food doesn't live up to the hype. If you can get beyond those two "problems," Delfina is very fine place for a meal. It is a fairly small and casual place on a side street in the Mission. In addition to the tables, there is a very small bar (2 or 3 seats) and 12-seat cafeteria-style bar with stools. The food is Cal-influenced Italian, in that fresh ingredients and simple preparation are the rule. They always have truffles during the season, and it is amazing what shaved white truffles will do for roast chicken or mashed potatoes. If I lived in the neighborhood, I'd eat here every week. Recommended.
Enzos - Italian place on Brannan just down the street from Bizou. The food was 1950's Italian and mediocre in the extreme. One plus was that it was quiet; you always stood a chance of eating alone here. Now closed. No recommendation.
Fringale - French/Basque bistro in SoMa with remarkably consistent high-quality, delicious food and reasonable prices. It is here that I learned the secret of long life and happiness. Start your meal with poached Foie Gras and a glass of Port or Sauternes; end the meal with Crème Brule into which some Grand Marnier has been poured after cracking the caramelized crust. Punctuate those meal ends with a Basque Seafood Stew featuring a luscious roasted red pepper sauce. Have a glass of red Burgundy wine with the entree. Well, maybe I got the long life part wrong, but this will certainly make you happy! Great staff. Highly recommended.