The best teaching I've seen in a MOOC is in Introduction to Financial Accounting / More Introduction to Financial Accounting by Brian J Bushee on Coursera. (This used to be one course back when I took it.)
The subject matter is probably not that interesting to most hackers but it is a great example of making the MOOC-format work.
The subject matter is probably not that interesting to most hackers but it is a great example of making the MOOC-format work.