They only have a handful of options. I don't think they are known for a particular sandwich, but their "thing" is that the garnishes are chopped. So they add a scoop of chopped tomato, a scoop of chopped onion, and a scoop of chopped pickles. They sprinkle the whole thing with (italian?) seasoning too.
I usually get the ham and cheese or the hot sausage and peppers (cheese is extra). The Italian cold cut is good too. My boss gets the tuna every time.