I may be straying a little off topic but it's worth noting that many of the mentioned course material and much more from a wide variety of subjects can be found

I may be straying a little off topic but it's worth noting that many of the mentioned course material and much more from a wide variety of subjects can be found at http://www.academicearth.org/ http://www.academicearth.org/. This place is filled with awesome. Maybe you know?