This was over at the Judo Forum. Some of the clips cracked me up (including the first one where younger brother clocks older brother from behind). Most of them seem real, maybe one or two were staged. In any event for your morning amusement:

http://www.youtube.com/watch?v=zrpawY6Pk7M&feature=player_embedded

Let me be quick to add, I find this clip funny because several of the things have almost happened to me too. For example I almost went off the front edge of a stage years ago doing a hung gar demo.

take care,
Brian