When I first saw this video Wingsuit Clift Diving I was speachless. Words do not realy explain it, you just have to watch it. Let me know what you think in a comment.
If ever there was something that should be a sport.
Extreme Base Jumping in Wingsuits
Birdmen, Batmen, and Skyflyers:
Wingsuits and the Pioneers Who Flew in Them,
Fell in Them, and Perfected Them
Please click image for info @Amazon.com