Here's one of the coolest freebies we've seen in some time -- video recordings of lectures from prodigious American universities that you can view online! Head over to http://www.academicearth.org and check out recorded lectures from Yale,Stanford,Princeton,MIT,Harvard and Berkeley.
You will find a mix lectures with everything from Englishto Computer Scienceto Historyto Entrepreneurshipto Economicsto Starcraft. Some lectures are stand-alone and else where lectures for entire courses are available.