Laughter Systems

I went through 10 pages of googling for laughter yesterday. I have so far found these systems:

* Madan Kataria – http://www.laughteryoga.org/
* Steve Wilson – http://www.worldlaughtertour.com/
* Guru Ramesh Pandey – http://www.universalyoga.org/
* Annette Goodheart – http://www.laughtercoach.com/
* Sri Sri Ravi Shankar – http://laughterinternational.org
* Some unknown guy – http://www.youtube.com/watch?v=psftkUlg1l0&NR=1