Glass Nickel definitely has some of the best pizzas in town. Unfortunately, they're just way too over priced for me. I don't really understand the cult following. If you want expensive pizza, go to Uno's and get the nicer dinning experience. Otherwise go some place that's priced normally and still quality (it's not hard to find in Madison).
Also, quick note, I tried their po-boys during Mardi Gras season and they aren't too bad. They're definitely not as delicious as The Bayou's, but they're way cheaper. They're good for when you're really craving a po-boy, but don't want to make your own or pay for better.