This is cool:
Avalanche Skier POV Helmet Cam Burial & Rescue in Haines, Alaska from Chappy on Vimeo.
I think this video is on the Black Diamond website as an advert for wearing an avalung.
Life is short, art is long, opportunity fleeting, experimenting dangerous, reasoning difficult
He started off not wearing his avalung – you can hear him talking at the start – and only managed to get it partly into the corner of his mouth. Not sure if that is an advert for wearing one or not? There are a bunch of interesting comments on the actual vimeo page where this is posted. He was lucky – his glove came off towards the end of his fall and ended up on the surface, which helped him to be found in 4:28 minutes. Now that's pretty amazing – you can hear his breathing start to labour even during the few minutes he's buried.

Scary, but amazing footage, especially the 'surfacing', wander if he had an avalung on like the other guy, nice to see everything go well :)