Any discussion of sandwiches should mention Jerry's Sandwiches in Chicago, where the menu is many many pages of nothing but...you guessed it, sandwiches. I think they have over 100. And over 200 North American beers.

http://www.jerryssandwiches.com

That said, I made a good one today:

slice of whole wheat toast
shmear of Chavrie goat cheese
some stone-ground mustard
some sliced pickles
turkey breast