That is indeed a fantastic idea Frank. Some of our classes already come close to those lines. :) I think a class like this would be a great way to help some of these HR folks unwind for an afternoon. BAHRA or the local ASTD chapter might really snap it up.
I love reading your blog. Just love it. Should you ever find yourself in the Denver/Boulder area and need a partner call on me. I think facilitating with you would be a blast. :)