Ha, thanks...  I've been playing around with the helmet cam... I dunno how I like it so far.  On one hand, it's neat because it provides almost an exact record of your experience on the descent.  But if watched on a big screen, it kind of makes me nauseous.  Maybe I just have to learn to keep my head still when "filming"... 
  
I imagine a helmet cam could be pretty neat for climbing too (with some serious editing since it's so slow).