I don't think mine's on the list. I'd just gotten a Pocket PC, and was sick of music all day. I needed programming. I'd heard of this thing called podcasts, but I wasn't sure if it was just an urban legend.
I did a search on google for "free radio show mp3s" The 8th hit was this fucked up show called "Free Talk Live." I downloaded the latest few episodes and listened at work, and haven't missed an episode since.
I thought I'd hit the jackpot with 12 hours a week of programming. That wasn't enough though, with 40 hours of work a week, and I found podcastalley.com through the show, and thus began my entrance into podcast listening.