Ok, let's say someone is visiting Detroit on a Friday night and wants to spend it doing something quintessentially Detroit-ish. What Friday-night activity, event, site, etc.. do you think would most leave a person feeling that they understand the city a bit better?

[[Note: I'm anticipating a lot of clever jokes along the lines of "Trade your food stamps for an eightball and then get carjacked at a gas station." Fine, but please, let's make them clever jokes.)