I stumbled on the Cutchogue Diner on my way into the North Fork touring wineries. What a great, truly local experience. I enjoyed a meatloaf sandwich (as listed on the Specials board, and on the advice of the server who said it was "good today"), and would have loved some dessert had the sandwich not been so filling! The pie list was simply classic.
It's the kind of "local flavor" place I crave when traveling, and I'd easily go back were I in the area again.