The Economist has a noteworthy article on how the iPod has changed and is changing the way we listen to music. Rumormongers of the video iPod should take note of the article's conclusion:

Are video iPods next? Strikingly, none of these shifts in usage patterns applies to video. People do not watch movies while walking the dog, make playlists of their favourite movie scenes, or clamour to buy individual scenes online. Portable video-players, which are already starting to become available, undoubtedly have their uses, such as providing entertainment during long journeys. But they seem unlikely to be the kind of industry-changing products that the iPod and its imitators have unexpectedly proven to be. (via The Iconfactory)