http://blog.sina.com.cn/u/4b2a3c3e010007f0
some of you might not know him. He is Takuto, the designer of L2, a player from China. This video is from a yoyo book he wrote and he posted it to his blog.
the video player doesn't start downloading until you click 'play'
it maybe slow, so pause it first until it finished download.
enjoy.