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.

I was about to disagree, but it seems that course was redesigned in 2017 and the new syllabus looks like a real course.

So I'll just say the pre-2017 version I took was clearly created by bad PR-people.