Heh...been there, done that. I took quite a few video courses when I was in the Air Force...had several weekends where I spent an entire day watching classes.
Luckily they weren't on truly tricky subjects. The biology one was the most interesting...most of the video material dated back to at LEAST the early 80's, possibly later. Also included a groovy sci-fi style soundtrack. I think they borrowed the Dr. Who music library...
These are not quite that out of date (funny how biology does not change much).
They are live feed from the classroom that are stored and we can play them back over the net any time we like.