Jane and Michael Stern, who write a monthly column for Gourmet about road food have a list of America's Top Ten Diners at Epicurious.com. Sadly, there is nothing in New York City (if only the Jones Diner hadn't been torn down!). They do recommend Wasp's Snack Bar in Woodstock, VT, which I happened to drive by just the either day! I noticed it (it was closed) and thought, "Huh, that place looks pretty cool." I will have to go back for sure.