Extreme Pogo, or Xpogo, is a relatively new extreme sport that involves performing feats on extreme pogo sticks. What makes them extreme is their ability to throw their riders to impressive heights, around 10ft or so. You may have never heard of Xpogo (to be honest I wasn't aware that it was growing in popularity).
If that's the case, check out this cool video of Xpogo athletes hopping around NYC.[via Geekologie]