unalone:

This is incredible, and doesn’t cost $160,000. Free lectures from Harvard, Berkeley, MIT, Stanford, Princeton, and Yale, covering a ton of subjects, for absolutely free.

More than lectures, AE offers entire courses. This Yale course on the American novel, for instance, spans 25 lessons.

Also of note: the @Google series of lengthy interviews, including a month-old one with Chris Onstad of Achewood fame; TED talks, which cover an incredible range of topics and speakers; and iTunes U, which has something like a zillion lectures. You can basically see every college class ever taught on it.

As a brief aside, isn’t the world just incredible? You can access millions of dollars worth of lectures for free, without once moving from your seat. Life rocks.