Not exclusively photography-related, but I thought I would throw this out there anyway.
- Adobe Photoshop Lightroom Killer Tips -> Lightroom Videos
- Buzz Out Loud
- Camera Dojo: Digital Photography Enthusiasts
- The Candid Frame: A Photography Podcast
- Daily Photo Tips with Chris
- Digital Photography Life
- Digital Photography Tips from the Top Floor
- FLOSS Weekly
- The Java Posse
- Layers TV: For Everything Adobe
- MacBreak Weekly
- Moose Peterson
- Photoshop User TV
- Rails Envy
- Security Now!
- This Week in Photography
- Within The Frame
- WNYC’s Radio Lab
- You Look Nice Today
Feel free to share your favorites in the comments.