Podcasts are shows (some audio only, some audio & video) that you can subscribe to that have multiple, ongoing episodes.
Podcasts are about the only thing I use my iPod for. I'm overseas (obviously) and I get a little homesick now and then, lol, so I subscribe to a lot of the NPR podcasts which I listen to while I do dishes and the like. For example, I love to listen to Talk of the Nation, that's a free podcast you can download the day's show and listen whenever. I also download World Story of the Day, Fresh Air, sometimes Car Talk, etc. etc.
There are a couple of other podcasts I subscribe to, I say it's for the kids but I like to watch them as well, lol -- Beautiful Places, Discovery Channel, National Geographic shorts. These are all short (like, 5-10 min) videos of different nature or cultural-type stuff, I like to watch them if I'm sitting in the car waiting for a few min, or my kids watch if they're waiting in the drs office. I also get Sesame Street Podcast for that purpose.
Another quirky podcast I get is "Learn Hindi from Bollywood Movies", which makess me and my Indian dh laugh, lol, and maybe I do learn a vocab word or two. There's also a podcast for Arabic, and you can get podcasts for news in different languages, etc.
I'm all into the freebies, I don't know if dh would agree to spending money on programs for my iPod, so all the podcasts I subscribe to are free. :cool: