Somebody mentioned something about P+B+J on saltines and it immediately fired up the image of another dish with saltines that I really like, the infamous "Cheese Plate" served at McSorley's Old Ale house in the Village (15 east 7th street across from cooper union).
It would be really easy to reproduce except I dont know exactly what kind of cheese McSorley's uses on that cheese plate -- its a white medium-sharp cheese kinda like cheddar but not exactly. I used to know exactly what they used, but I've forgotten. They cut a few dozen square peices of it, serve it with a stack of Premiums and rings of raw white onion and english mustard heavily laced with horseradish.
I know, sounds really basic. Its awesome with ale, and it tastes better the more sloshed you get.
McSorley's burger is also the ultimate in burger simplicity -- its big, its juicy, and its got nothing weird on it. Its also cheap.
If you've never been to McSorley's -- the place is a throwback -- its the oldest surviving bar in NYC (and operated as a cop's saloon during prohibition) and they only started letting women in during the 70's.