I subbed today for an elementary gym teacher.
It was only a half day, but it was a lot of fun.
I had four classes, each played a variation of freeze-tag and a variation of dodgeball. The last couple classes I decided to join in on the dodgeball... THAT was a lot of fun, especially since, instead of getting "out" I would just switch teams.
Also, as of about 10 minutes ago, I am officially going to be teaching summer school at a local high school. It's only four hours a day, four days a week, for six weeks... but I'm still looking forward to it.