Consider this your Pork Store alternative when you don't want to wait in line across the street. The food is just as good, prices are low and you can walk right in to a table even on Sunday at 11 a.m.
Absolutely extraordinary food, and the best burger I've tried in San Francisco so far (bacon cheeseburger). Although the place looks like dump, food, service and prices are just fantastic.
If you're going for breakfast, the Pork Store Cafe across the street is much better.