If you really wanted crazy you could blend four sports together; chess boxing and...
https://www.youtube.com/watch?v=wGz-uzGaJgA
ChessBoxing
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This is pretty funny....
http://www.youtube.com/watch?feature=player_embedded&v=PeOMLxYbpPE#!
http://www.youtube.com/watch?v=YaBWBmYfqVQ&feature=related