Americans have taken the traditional crust-sauce-cheese trio born in Italy and twisted it to suit our snack-happy palates - pie styles like buffalo chicken or cheesesteak are so common they show up on national chain pizzeria menus. That malleability is one of the best things about pizza - you can use nearly any ingredient as a topping and the end result will taste great (or at least be interestingly edible). In our research for Pizza Week, we came across five unorthodox creations in Philadelphia that are seductively delicious, despite being unexpected. What do you think, are these combos drool-worthy or just plain wrong? Check them out and let us know.