I think it would be useful to add recording dates (and some other metadata, such as participant lists and perhaps chapter links) to TBP’s YouTube videos. I don’t know the mechanics of doing this, but I suspect that editing the video posting notes might be possible. Alternatively, pinned comments might do the trick.
More generally, there could be some web pages that list and describe all of the publicly-available material (e.g., papers, videos) from Jeff, Numenta, and the TBP. For example, I’ve stumbled across Jeff’s conversations with David Eagleman, Michael Shermer, and Peter Diamandis; I’m sure there are others that I’ve missed…