Pintaile's Pizza [26 E. 91st St. (bet. 5th and Madison Aves.) 212-722-1967]
An extremely thin crust pizza with a totally original taste, Pintaile's is not for everyone. I would recommend it personally, and I think that is a slice that all New Yorkers (and even tourists) should try. If you don't like it, eat no more. If you do like it, you have discovered a whole new world of pizza.