I watched a safety cartoon for Woodwork once. Let's just say that seeing people cut their arms off and hammer nails into their fingers is best left to cartoons. Even so, the whole cluss nearly busted their guts watching it, it was that funny.
In Chemistry earlier this year, we watched a video that was made in I think 1965, so they were using old-fashioned equipment and it was black-and-white.
Oh, and I've watched weird learning videos in French. One time there was a guy who had what looked like a reverse mullet. xD His name was Hector.