Go to MIT

I'm reading a book on collaborative economics called Wikinomics, and the authors turned me onto the coolest thing: MIT now puts all of it's course materials online for free, for anyone to use. The website calls MIT OpenCourseWare

a free and open educational resource (OER) for educators, students, and self-learners around the world.

There's no degree and you can't use faculty office hours. But you do get access to reading lists, lecture notes, assignments, etc. Sounds like a great resource for a knowledge junkie, and a great example of how opening an organization's assets to the world can move their mission forward.