Stanford iTunes U iTunes U is an area of iTunes that lets universities in the US share - for free! - audio and video from their lectures, talks and events. The contents are globally accessible.

By clicking on Power Search, you can easily limit the regular iTunes search to iTunes U.

Of particular interest to the readers of this blog is Stanford University’s Human-Computer Interaction Seminar, consisting of no less than 36 lectures by people such as Bill Moggridge, Bill Buxton, Elizabeth Churchill, Paul Dourish and Donald Norman.