I enjoyed searching the podcasts for exercise and fitness. I found a dieting science podcast that informed the user on foods and how they work in the body. It was called Diet Science. The particular episode that I listened to was on foods that will help keep the liver healthy and function properly. I also found a podcast with video on exercise. The Ford Model's workout was interesting. It took a male and a female through a workout that could be done together with creative modifications.
I can see where podcasts can help a person keep up to date on topics that interest them. I think you could also have students follow a podcast to keep up to date on current events and trends. I think that podcasts would be very useful outside the classroom. Almost like a new form of homework.