Most of the time I will have my pizza with tomato sauce. The only other sauce that I have had besides that is a pizza with bbq sauce, which is really good. It's something different to try and actually tastes yummy.
One of the best pizza sauces I've ever had was almost like a garlic alfredo sauce, and the pizza was topped with chicken and mozzarella and a few other things. It was amazing! I much prefer that over traditional pizza sauce.