When they have it, Bi-Rite Market in the Mission sells bottles of Pliny. I believe you can also purchase carryout bottles from Toroado. As far as the East Bay goes, I can't go to Berkeley without stopping in to see Keith at Emilia's. I like the slices at Gioia pizzeria (Berkeley). As far a HITW (hole in the wall) place in SF I guess Golden Boy Pizza probably fits the bill.