Bumping this thread, I'm sure some good podcasts have gained traction in the last few years. I love listening to podcasts and I'm glad there are some with AT / Backpacking information.

Anyone listening to any other outdoors / backpacking podcasts?

From what I've read above, looks like these are the good ones to check out:
Trailcast
Practical Backpacking podcast
The Trail Show podcast
Outdoor Station podcast
Pox & Puss podcast