Fuck toppings. It's all about making the right sauce, using the right wood burning oven, and knowing how to make the dough the right way. Toppings are just their to hide it and to me make it taste even worse if the pizza is no good. Now if you were to put shrimp on it then I can't really say anything bad because that's more of a gourmet pizza then. I can't stand pepperoni, peppers, or meatballs and onions on my pizza.
I think those bbq pizzas with chicken and shit on it are pretty good though. Same goes with a buffalo chicken pizza with some blue cheese in it.
Pepperoni. Im pretty bare bones when it comes to toppings on basically anything...hell the only thing i ever put on burgers is cheese. Sometimes, i'll go straight patty with nothing whatsoever on it. For pizza, about the only topping other than pepperoni that im ok with is bacon.