I know there's usually not much you can do with ham and cheese sandwiches, but some are definitely better than others. Which restaurants and pubs have the best ham and cheese? It can be in any form, from "toasties" at Irish pubs to gourmet sandwiches on freshly made bread.
My personal favorite is actually from an Italian market--D'Agostino's in Arlington. Excellent quality ham, decent roll, several choices for cheese. Perfect for a picnic or a hiking trip!