Here are two good episodes that I would urge him and other skeptics to start with -- that is if they are too lazy to watch every episode, at least start with these two:
https://www.youtube.com/watch?v=SA4UkCDx7aM&list=ELVU7dOVfLczcbIqn-4Ti2Gw&t=267s
https://www.youtube.com/watch?v=qM5VIzNLJwg