Arguing the case for Fair Use

Slashdot is running an article on compiling examples of absurdities of Fair Use. One of the examples listed is from one of my least favorite bands, Sonic Youth, who require album purchasers to purchase all of their tracks just so they can receive a track of 63 seconds of silence. I'm surprised the estate of John Cage isn't suing them. Can you come up with other such examples of how copyright has trampled on the idea of Fair Use?