My favorite is probably a place called Gambino's. I cam across them in college. My best friend and I would hang out there all the time. They had a really neat special called "Beat The Clock Tuesday". Between 5 and 8 PM, whenever you ordered your pizza, that's the price you'd pay. For example, if you ordered at 5:30, your pizza would cost $5.30. When I graduated, I was delighted to learn that they had a location in my hometown!
And a special hat-tip to Giordano's and Phil's Pizza D'oro in Chicago! Eat their pizza. It will change your life.