We love Biergarten...excellent authentic german food, terrific entertainment and an awesome beer flight. We always make sure we have dinner there on every trip.
We also enjoy:
Breakfast: Kona Cafe, Crystal Palace and 1900 Park Fare
Lunch: Chefs de France, San Angel Inn, 50s Prime Time
Dinner: Kona Cafe, Kouzzina (although it's closing at the end of September)