So, Zumba. Dance aerobics to Latin-influenced pop. Super-perky instructor. Lots of hip-shaking. It was a bit challenging to follow all the steps (and I certainly did not manage to make most of them look as graceful as the instructor did), but I mostly kept up, and I didn't fall over and I didn't collide with anyone. (Had a couple of close calls during the bits where you spin around.) It was good goofy fun, although I actually found myself wishing that it had been more aerobically challenging. I definitely broke a sweat and got my heart rate up, but I wasn't breathing hard or feeling a burn in my muscles. (In fairness, if I hadn't been trying to learn the steps, I probably could have done the workout in a bit more gung ho way and upped the intensity a bit. I also hear that the other Zumba instructor is more challenging.)
Mostly, I'm becoming more convinced that I'm not really a group fitness class kind of person. It's fun to try out new things, and the cameraderie is kind of nice, but I get frustrated by the fact that by the time I've started to get the hang of any new skill, the class is generally moving on to something else. And I like being able to choose my own workout music, and to just be alone with my own thoughts when I'm in the gym.
I wouldn't mind having a workout buddy to spot me on some of my heavier lifts, though. I need to do a better job selling strength training to my colleagues.