My iMac G5's internal HD is still called Macintosh HD, because I'm scared that some of my apps might confuse themselves if I rename it. Howeverrr, I have two external drives, the first of which is a 120GB LaCie I named Big Kahuna because 120GB was a lot back in the day and the second is La Isla De Muerta for, err, other reasons. My iPod Touch is called Esmeralda, my first-gen shuffle is Duke Nukem and my USB pen is called Tyrannosaurus Alan (after a glorious set of adverts in the UK for Volvic water YouTube them!).