A couple months ago, the 5 of us took a trapeze class at South Street Seaport pier. Jenna had taken the class before and highly recommended it. In the few hours time, they really taught us and pushed us to do harder things. The instructors made the class that much better too. I recommend the night class. It's neat to city the city lit up as you fly.
I must admit too, I was so sore the next day. I underestimated how hard it was to hold my own body weight.