If you know John Cleese at all you know him from his tenure in the comedy troupe Monty Python. But Cleese had an ancillary career producing humorous, and very instructional business training videos. My favorite was the one he produced about meetings. I showed that several times at various different companies and it had its desired effect of making people think twice or even three times before they called a meeting and how they conducted one. You should be able to hunt these films down: BFI to preserve John Cleese training videos, according to BBC news. Cleese’s firm was called Video Arts and is still in existence in England.
Check out YouTube as well, though much of what you will find will be trailers and snippets, not the full films.
We used to pay to rent these films! What a concept!