P.R. opened Pie Town on Trade St, across from Johnson and Wales. Killer mushroom pizza! Plus homemade root beer. We would go once a week except we're a little north and it's a little pricey to go that often.
If you're going to be in the University area try Due Amici on Prosperity Church Rd. We love the Caprese - fresh motz, garlic, roasted peppers and basil. A joint, not a restaurant like Pie Town.