Pizza Hut has been attempting to reinvent the pizza for several years now (perhaps to help revive their lagging sales). It started off with the stuffed crust pizza. That is a pizza with cheese inside the crust. This pizza is supposed to be eaten crust first (according to their commercials).
Pizza Hut quickly moved on to introduce a double decker pizza, (The Insider). They take a plain cheese pizza and put sauce on top, and then more cheese, and finally they add the toppings that you ordered (a variant of this pizza has two layers of topping).
If all this wasn't enough, Pizza Hut now sells a breadstick pizza. The breadstick pizza has detachable breadsticks built into the outer crust. The commercial for this pizza features people arguing over what you are supposed to eat first, the pizza or the breadsticks.
What is in store for the future of Pizza Hut? I don't know, but I wouldn't be surprised if they came out with "Pizza in a Cup".