The latest generation of iPod Nano seems to be a huge hit. I see them all over the gym on armbands these days (it makes my 30 gig iPod Classic seem downright clunky in comparison!). The Nano is still small but now has a video screen (perfect for video podcasts), has plenty of room for a lot of songs, and comes in several great colors (Apple just added a hot pink that's beautiful). The 4 gigabyte Nano is about half the price of a full-fledged Classic, so it's a good place to start if you don't think you'll need more space any time soon.