Falbo Brothers is my go-to for my greasy pizza cravings in Madison.
Their crust is great, thick or thin, and they are always generous with the toppings (so much so that sometimes we have to ask for moderation with the fresh garlic).
As they are a pizza place -- stick with their pizza or their falzones. Both are good. I've ordered sides on a whim before and they taste like they were just fried from frozen. Not bad, but certainly not worth taking up room that keeps you from eating more of their delicious pizza.
Oh, and one more thing -- as a lover of Chicago-style pizza they are not my go-to. They use a relatively unseasoned chunky tomato on the top and the ratio of pizza to tomato is not one that should be used in deep dish. It winds up feeling a bit more like pizza with a bland tomato soup on top.
However if you stick with their regular pizzas you will not be disappointed!