By intrinsic value he means the value of the paper the note is printed on, which will probably be next to worthless. Coins on the other hand have a higher intrinsic value (due to being made out of metal) as they can be melted down and the metal sold.
There's something weird going on with Mr. Hall's ears; at some points, it looks like he has none.
Anyway, great video, I never realised they were so thorough.