For those of you who like Reuben/corned beef kinds of sandwiches (or even if you are curious) and have never done it, at some point find a place that specializes in the these sandwiches (like Carnegie Deli) and order their giant sandwiches enough for two people.
One part awesome, one part impossible to finish alone. Biggest drawback is that nobody can ever finish one on their own so you either toss it or do take out container and then you got to carry it around and bring home. First time I did this the plan was lunch (this) and then touristy shit. Was a pain walking around with it, so I forced myself to eat a bit more of it and then threw the rest in the trash as we didnt want to keep it in the car all afternoon.