This article suggests that the iPod may be the new TV and radio. The writer talks about how she is regularly downloading radio and TV programs to her iPod and watching them on her train ride home every afternoon from the office.
In Apple's last round of largely unnoticed iPod upgrades, one of the things it did was change the size of the iPod nano display to a widescreen format and added the ability of the tiny music player to play back video. This change makes the tiny nano much more versatile, and gives it the ability to behave much like a portable DVR (digital video recorder). While it can't record directly from a TV, it is quick and easy to grab free and fee-based TV and video programs from the iTunes Store and watch them later.
Unlike other content strategies that require either a single purpose device (like the Slacker Portable) or a never-ending subscription fee, the combination of the iPod and the iTunes store puts the user in complete control.