All pizza HAS to have cheese, but if were talking other than that....I'm going to go with the classic pepperoni. The only time I ever eat pepperoni is on a pizza and you can't go wrong with a regular pep and cheese.
i dont have any single favorite topping since i usually order my pizza with a combination of pepperoni/pineapple/italian sausage/olives /onions bell peppers and canadien bacon