Pizza Ovens, Hog Cookers
Pizza is tricky. You need pretty good temperature control in order to get the top and bottom cooked at the same time. Nothing worse than the combination of burnt bottom and raw sausage. A special pizza oven is a nice luxury, but with a little practice, you can make commercial grade pizzas on a wide range of grills. Here's some recommendations of the tools you need and, if you've won the lottery, a guide to pizza ovens, a few of which are surprisingly affordable.