When I'm driving somewhere for work I find it real helpful to listen to stuff that stretches and grows me. So I subscribe to a number of different podcasts, some sermon stuff (Mark Driscoll etc), some church planting stuff, some leadership/pastoral stuff and I always make some space for innovative church practices. And the best stuff that I have come across is Tim Stevens & Kem Meyer and the Countdown 2 Innovate Podcast. Get into it, Kem is a blast! She ALWAYS makes me laugh!