Stability Ball Drumming Class?

[Guest guest]

Has anyone heard about fitness ball drumming? I heard about it from some WW members at a college where there was, I think, a demonstration recently. You have a fitness ball sitting on what looks like risers from an aerobic step, so it doesn't roll away, then drum on it with drumsticks while also performing some very simple cardio movements. It looks interesting even to me (rhythmically-impaired as I am).

Here's a youtube link to see what it looks like too: http://www.youtube.com/watch.