So we wound up using both of the games I mentioned on night one of the class! Sorry I forgot to let you know. The dragon game was especially well done by our folks, but I think that (un)fortunately is actually better for what we were practicing (verbal agility and quick thinking). I think they (and the other exercises) were successful in driving home the importance of practicing this sort of improv to keep those mental muscles reactive. Anyway, thanks--these games worked well and I will probably continue to integrate them into future classes (I'll run another in July).