The Funny Limits of Fair Use

Here's the best argument I've seen for (and against) legalizing digital mashups. YouTube contributor StSanders took concert video clips of guitar heroes like Clapton, Santana, and Van Halen and replaced the guitar solos with hilariously bad plunking. (Plus other noises, as you can hear here):

The sync is amazing. But what's especially funny is that StSanders's soundtrack manipulation is so skillful that half the viewers simply think their musical heroes were stoned.

This is exactly the type of derivative artwork that should be covered under Fair Use, but at the same time, one can see how it could damage the original artist's reputation.

(Thanks to Julian Kwasneski for the tip.)