Cheese options on pizza are off the chain. If you're all about pizza, and you haven't suffered any major cheese traumas, chances are you're down with mozzarella in its shredded and fresh forms, buffalo mozzarella, Parmesan, Pecorino Romano, and the like. But then there are the cheeses that, while regionally traditional, are unthinkable to some people. (Folks in St. Louis love some provel on their pies; Greek pizzas incorporate cheddar; and we've seen American on pizzas in Philly, Richmond, and Framingham, Massachusetts.)
Other cheeses have gained prominence on pies due to the artisanal pizza movement. In short, there are a whole lot of cheese options out there. Too many, in fact, to list in one poll, but here are some of the more prevalent cheeses out there that have staked their claim in the pizza territory. Which do you think are legit pizza cheeses? If you don't see one of your favorites listed, tell us about it in the comments.
PS: This is a "click all that apply" situation.