For the record this has got to be the coolest sport, I've never know about.
So what is it?
Seprak Takraw (a.k.a kick volleyball)Is a sport native to the Malay-Thai Peninsula. Sepak takraw differs from the similar sport of volleyball in its use of a rattan ball and only allowing players to use their feet, knee, chest and head to touch the ball. It is a popular sport in Malaysia, Indonesia, Thailand, Singapore,Myanmar, Vietnam, Cambodia, Laos, and Philippines.
For a more technical explanation on the game check out the wiki entry here, or you could just check out these cool videos...