Uncle Sam's has some of the best subs I've ever had.
Almost all of their subs are great, including their Italian, Ham and Cheese, Turkey, etc. My favorites are the Steak and Egg and the Capicola
The prices aren't bad either, as a sandwich, a large handful of fires and a drink will run you about $7-$8.
My only complaint with Uncle Sam's is its hours, as they close around 8 or 9 every night.