These videos are amusing, until you realise that people that are the same species as you waste their time in ways as mindblowingly geeky and unproductive as this
http://youtube.com/watch?v=aZpD0btOZx8
I have to disagree. If you watch his other videos they're not all as geeky as Super bloody Mario. At least he's playing
music - which seems a lot more worthwhile (to me) than a load of wanky sweep picked arpeggios or something (although I bet he can do that too

).
Now on the other hand, if you're questioning the whole concept of practicing 12 hours a day, or whatever, to gain mind-boggling technique, then I tend to agree - but I still wish I had the motivation, focus and determination to do something like that.