I use the podcast app that runs via my iTunes account. It is available on my iPhone for immediate listening and updates daily. Depending on your tastes here are some of the ones I listen to:
- Andy Stanley (North Point Church)
- Perry Noble (Newspring Church)
- Mark Batterson (National Community Church)
- Matt Chandler (The Village Church)
- Erwin McManus (Mosaic Church)
- James MacDonald
- Greg Laurie (A New Beginning)
- Tim Keller (Redeemer Presbyterian Church)
- Mark Dever (Capital Hill Baptist Church)
- Voddie Baucham (Grace Family Baptist Church)
- Tony Evans (Cornerstone Bible Fellowship)
- Ravi Zacharias (Let My People Think)
- Various Seminary Chapel Podcasts (DTS, SBTS, SEBTS, Duke Divinity, etc)
That is a pretty in depth list. Its not all my podcasts but plenty to get you started.
I really like the podcast function on my iPhone as it allows me to listen while I exercise and drive about town. I've almost completely stopped listening to the radio (with the exception of NPR in the mornings) but even then I'm using my radio app which delivers better quality.