In conjunction with Amanda's post with pizza crust and sauce recipes, here's how we do pizza night with friends:
We set out all the toppings in their own bowls. We make a whole bunch of little crusts about the size of your hand, and everyone makes their own mini-pizzas.
I make our sauce, which is posted here. Our toppings include the usual Americanized stuff like pepperoni and black olives. We have multiple kinds of cheese like motz, block Parm (not the stuff in the green can), and goat cheese. We have Italian sausage, Italian spiced pulled pork, olive oil, diced bell pepper, mushrooms, artichoke hearts, capers, dried herbs like oregano and basil ... we use the "Jamie Oliver's Italy" book to get ideas for topping combinations.