...guitar! I've been playing the guitar for a few months now and the tips of the fingers on my left hand are now noticeably harder than those on my right. I'm still stumbling around the fretboard but at least I know a few chords and at least I'm not embarrased when I go to guitar emporiums; I always get odd looks when I play the Imperial March with as much distoration as I can muster from whatever amp I get given. My Korg PX4 is good for this too. Oh and The Killers and Kaiser Chief albums are excellent. Smile like you mean it!