Okay, it's an artisnal pizza place, not exactly a new idea. But if you want to look at a massive oven, and eat, of course, there's a good place in Bethesda, Md. At Pitzze, the dough is all made with sourdough starter, not commercial yeast. That goes for both the pizza and the breads. Here's some oven porn (hope it is okay to use that word in this context). I got lightheaded just looking at it.