Well I couldn't be happier to sign up for few of these courses, Standford is offering some nice computer related online courses starting January or February.
You need to sign up first to be able to attend online
PS:公开课的老师都是很牛的老师，在课上能学到不少东西，并且一般最后会有个以老师个人名义发的证书。
Computer Science:
http://www.crypto-class.org/
http://www.cs101-class.org/
http://www.game-theory-class.org/
http://www.algo-class.org/
http://www.saas-class.org/
http://www.pgm-class.org/
http://www.nlp-class.org/
http://jan2012.ml-class.org/
http://www.hci-class.org/
Entrepreneurship:
http://www.venture-class.org/
http://www.launchpad-class.org/
Check them out anyway, I am going to watch the some classes for sure.
Enjoy.