Have you explored the new iTunes U, available at the iTunes Store? If you haven't, you're missing out on something special. Several of the universities listed at iTunes U have excellent, free lectures that you can download to iTunes and your iPod. There are lectures, for example, on politics, religion and art. Some of the universities even have free classes you can enjoy with iTunes. I found the lectures from Stanford and the University of California at Berkeley particularly stimulating.

Accessing the lectures is simple and straight-forward. Go to the iTunes Store, select iTunes U at the bottom of the list of iTunes Store items and then select a university and explore their offerings.