DEEP DISH is a must.
Then you add Sausage and Mushrooms to the crowd.
There is a sit down chain here that dows this pizza justice. It is called BJ's. Does BJ's exist outside of Los Angeles?
My favorite restaurant for pizza in the nation is Pizzaria Uno. When I was in DC, I ended up there 3 times in about a week. Their pizza crust is the best. They opened one in Los Angeles, but sadly, it never caught on. Are they still around?