There has been a rash of free online course sites popping up on the Web lately. 

I say it in this manner only because as a distance educator, this really gives us a chance to not only extend our learning but to consider best teaching practices in online environments and how we can apply this to our own teaching. 

With this in mind you may want to check out the following: 

Einztein: Just beginning, but it looks like they will be hosting courses from Universities or individuals. Interesting. 

Free Video Lectures: Checkout these great courses provided by Harvard and Stanford Profs. I have already jumped into CS50...