Hands down the BEST pizzeria in the Champaign-Urbana area. They are the only place around that serves authentic Chicago deep-dish pizza, though not exclusively; they also do excellent traditional thin crust pizzas as well as sandwiches and other appetizers.
The campus location offers dine-in, delivery, or carry out. Be warned that the dine-in option is limited by space. All the tables are essentially crammed into a corner, which not only makes for a sometimes spatially uncomfortable seating arrangement, but also for a very unamusing game of who can shout the loudest to overcome the raucous echoes from other tables.
Whether you dine in or out of the restaurant, expect a longer wait that usual. This isn't the usual pizza, so naturally it requires more than the usual time to prepare. Regardless, Papa Del's is worth experiencing - don't leave Champaign without doing so!