Steve Blank, author of The Four Steps to the Epiphany and a principal proponent of Customer Development, is somewhat of a cult figure in the startup community.
I'm not a big fan of podcasts, since I don't spend much time commuting. However, if you do listen to podcasts, you'll be interested to know that Steve is going to to broadcast his posts again via a podcast. If you like podcasts, this may be worth signing up for.