Okay, this is old (March '05) but it's about the guys behind Linux on iPod -- apparently they hijacked the scroll wheel clicker and got it to play out the iPod's bootloader code as a series of clicks. They recorded the clicks, and then wrote a decoder to reassemble the sounds back into code on a PC (no word on if it was Mac, Windows or Linux box).
www.newscientist.com/article.ns
www.newscientist.com/article.ns