It is my understanding that with over 115,000 signed-up, it constitutes the largest MOOC [ http://en.wikipedia.org/wiki/Massive_open_online_course ] ever. Certainly an historical experiment with possible future changes in delivery of University-level education: http://www.reddit.com/r/aiclass/comments/kp1wb/amazing_we_can_probably_offer_a_masters_degree_of/
I've decided to take the Basic track so that I only take the quizzes, but get to miss those frightening exams. :)
Thankfully, all of the pre-reqs are available as videos on Khan Academy.