I'm a marketing guy by day, tech geek by night. I started my career in software programming but moved to--oh, the humanity!--marketing within a couple of years and have enjoyed it thoroughly. I think understanding technology has made me much better at marketing it.
Grabbed Linux a few years ago to resurrect old hardware into useful things like servers and have been using it ever since. Not really an expert at it, but I've been through enough troubleshooting that I can fix most of the stuff I break.