There are a handful of places I have to go back to when I visit my old stomping ground, downtown NYC. One of 'em is Mexico City-style taco and tequila bar/resto Barrio Chino in the LES. It still kicks ass.
Since I manage to get out to NY rarely—maybe once or twice a year if I'm lucky—I invariably end up ordering the same thing: my all-time fave dish, the chile en nogada. That and a couple of coconut mojitos, and I'm set for the night. Woooot.