haha....I love the Pizza Hut crusts too! It's pretty much deep fried like everyone else says - it's what makes it so good. Sure beats the crust on NY style pizzas that have no taste, are hard and bland...
If you've ever been to the US, try Old Chicago's or Uno's Chicago Style deep dish pizzas. The crusts on those are pretty good too. The Italian nachos they have there are to die for too!