The ones with Carmack and an ex-pilot (regarding UFO) were interesting. Other than that I really didn't have any knowledge of. It's more of the people he interviewed then his channel.
There are these anecdotes about Benjamin Disraeli that anybody who ever talked to him felt like they were the most intelligent person in Britain, and at times if there were a bunch people around him, they felt like they took turns being the most intelligent people in Britain.