My concern with this sort of clip is that it suggests you are able to control your path in a slide. For a real world example
http://www.youtube.com/watch?v=0l3E9IbA_jo
the guy who triggered it watched as the slide engulfed a skier further down the face, whose body has yet to be found due to the terrain trap at the bottom.
Suggests you should look up and down the mountain before you hit that slope....