If you like this (and who doesn't?), check out Bisqwit "Cracking Videogame Passwords" series from quite a few years back:

Season 1 - https://www.youtube.com/playlist?list=PLzLzYGEbdY5nEFQsxzFan...

Season 2 - https://www.youtube.com/playlist?list=PLzLzYGEbdY5mmad-FKPIl...