I've heard they put strange things on pizza in Sweden
The worst example I have seen had tenderloin, bearnaise sauce, curry powder, banana and peanuts, but it is unusual. Döner kebab meat pizza is quite common.
But most people have the classics: tomato sauce and cheese with mushrooms or ham, or both.
I've heard that there are also quite weird pizzas in Japan. Beef curry seems to be common there.