interesting. But me being a asidous football fan of the team that plays were the "original" mexican wave took place (Estadio Universitario, Monterrey, Mexico http://en.wikipedia.org/wiki/Mexican_wave)and I myself have started a few waves of my own, we change the direction depending on the people's response. If the wave doesn't "start up" on one side, we go to the other direction and back, until it goes around the stadium for one lap.

It is fun to make the wave thou.