I'm the lead guitar for Ann Arbor-based rock band, Moment of Inertia (we all happen to be engineers... computer, electrical, mechanical, and aerospace between the 4 of us).

http://uk.youtube.com/watch?v=8umukDN_PVE

We've been a band for 5 years now, and this is definitely my top activity right after running our startup and right before autocrossing (oh, and my girlfriend fits somewhere in there too).