I have become a fan of UPN after several visits. However, they are only open Thursday through Sunday at night. I also credit Anthony Mangieri with inspiring a new generation of pizzaiolos. So if you like UPN you'll also like Luzzo's around the corner and newly opened Isabella's Oven on Grand on the LES. I still need to get to Franny's in Brooklyn. Going to Old Forge Pennsylvania this weekend to check out the self-proclaimed "Pizza Capital of the World". Living in NY and having been to New Haven and Rome (but unfortunately not Napoli), I'm slightly skeptical.