Off the top of my head
Jin Dae Lee - Korean - 84th and Amst.
Cafe Con Leche - Cuban etc. - 80th and Amst.
Flor de Mayo - Comidas Chinas y Criollas - 82nd and Amst.
Roppongi - Japanese - 83rd and Amst.
Indian Cafe - duh - 83rd (I think) btwn Bway and Amst.
There's a Thai place on Bway and 81st or so that's good, I forget the name, and it's a little pricey
None of the above are "best in Manhattan" candidates, by any means, but if you want the UWS, there it is.