I have a 25 minute commute to work. Sometimes I listen to Conservative Talk Radio, but when I am looking for something with a little less doom and gloom, I listen to Podcasts.
Two Podcasts I almost never miss an episode of are the (1) The God Journey by Wayne Jacobsen, and (2) Beyond the Box by Raborn Johnson and Steve Sensenig.
A blogging friend of mine, Brandon Chase, recently started his own podcast. I listened to the first two episodes last week. All I can is WOW.