While I beleive this routine is very entertaining and certainly has some potential , I've just never
been a fan of this type of effect (can't mention the type without giving away part of the method).
With some thought and creativity,though, I believe it could become a much stronger trick. Also, this
effect will only really work in a larger crowd setting. Not that there is anything wrong with that!
Good teaching, good entertainment, and definitely provides some opportunities for creative
improvement.