I am glad somebody mentioned "The Teaching Company" and their offerings -
https://en.wikipedia.org/wiki/The_Teaching_CompanyI used to checkout their "The Great Courses" dvds from the local library (in the USA) long time ago. They were a set of presentations each a full lecture length and delivered by respected professors in their fields. No flashy animations/music/narrative distractions but sedate multimedia in support of the lecture. I am not sure how it has changed nowadays but people should definitely check it out; there is a lot of good content there.