Having just got a new iPod (it's so beautiful *sniff*), I'm done with cassette tapes so I gave them to a buddy at work. Mostly a bunch of Judas Priest, Iron Maiden, Rush, lotsa 80's rawk. He was stoked and I was glad to pass on the metal magic.
My buddy in art school used to use tape all the time. He also liked to raid the dumpster of the sticker printer's shop- thar be treasures.