faked but how?
 

That particular video was busted on a episode of Mythbusters. The creators of this video contacted the show and said it was fake. They used CGI graphics to make the video.

funny....
 

...but sad we can't believe anything anymore. We've known for years that fashion photos in magazines are airbrushed but now computer generated images have taken over (is that what CGI means?).
The speed of the body through the air did look a little unreal but do we know from what country the video originated? The terrain suggests Austria or Switzerland to me and I particularly noted the old pylons for what was once a skilift of the button or T-bar type running to the ridge above.

You are correct CGI is computer generated images. I believe it was filmed at a California ski resort I could be mistaken though its been years since I saw that particular episode.

flyCA
 

Thanks for details Shaulis - you are a mine of information