Peking Duck in San Francisco
Most places do the Peking Duck on buns, rather than the thin crepe-like pancakes. I like Yank Sing because you can just get one or two orders, rather than having a whole or half duck. (Although they serve it with steamed buns, not pancakes.)
I understand that the "real deal" not only presents the wrapped item, but also takes the rest of the duck back to the kitchen afterwards and prepares it as a separate dish. I've not seen that, though, so it would be interesting if anywhere does that.
The absolute best Peking Duck in the city is at Five Happiness Restaurant on Geary and 6th Ave. I was actually just there again this past Sunday. The duck is perfect and served with homemade pancakes. Plus, they make a soup out of the duck carcass.
The restaurant itself is very old and not all that clean. And I think most of their other food on the menu is only okay, but for the perfect Peking Duck, this is the place to go. We are actually thinking of ordering a duck to go for Thanksgiving then heating it up in our oven at home.