Food: Sandwiches in NYC

http://www.nytimes.com/2008/04/30/dining/30sand.html

I need to go on a crawl when I get back.

Though, for the record, I don't think the following rule is fair:

"The ground rules: A sandwich had to be composed as such; mere food on bread did not count. (This left out, for example, pan de lomo saltado, a popular Peruvian stir-fry of beef, onions and peppers laced with soy sauce, typically served with French fries, but piled onto a crusty roll for sandwich purposes.)"