Extreme Sports are by far the coolest sports to not only participate in, but to watch. I can't just sit there and watch normal sports like baseball, basketball, soccer, or hockey, (Unless it's Tennessee Volunteers Football or Pittsburgh Penguins Hockey), I have to be participating. Extreme Sports, on the other hand, are fun to watch, and fun to participate in (if you have the skill).
Check out these clips from the 1998 X-Games Bicycle Stunt Vert Finals

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Jay Miron pulls a 540-tailwhip � � � � Dennis McCoy hits a 900