What to do in NYC at 5 am on a Friday?

Yesterday I took the 2am-6am bus from Boston to NY to go get my visa from the Chinese consulate. However, the bus arrived early and i'd given no thought to what I would actually do in NYC from when I arrived until the Consulate opened at 9. So, when the bus arrived 45 minutes early, I was left wondering: What do you do when you're alone at 5am Friday morning in NYC?

My best answer- Sit someplace warm (like Penn station) and watch movies on the iPhone until things opened up. Next time, I'd like to find a better answer.