Love a good calzone! A pizza place not far from me does a great one...it is a small pizza folded over, and I have them fill it with pepperoni, sausage, hamburg, black olives, mozzarella, ricotta, peppers and mushrooms.
It is a couple days worth of food. And if you like cold pizza the next day, try cold calzone...
I discovered cal zones in the mid 90s. Growing up I got razzed a lot for always folding pizzas over, especially the little frozen ones.
It's usually burnt on the outside or still mushy and uncooked on the inside.