The title says it all.  It's an amazing HD video with scenes that we would see in Imax (and perhaps it was made for Imax)  Don't watch after eating. 

http://www.tubewatcher.tv/198

Wow!  I wonder what they do for fun? 

I bet they wouldn't do this   This was on Channel 4 in the UK recently and I almost fell off the sofa watching it.

Daredevils | The Human Bird - Flying Down The Matterhorn | Channel 4