I was made aware of this British TV production named "How Music Works" on the My Les Paul forum.
It's presented by Howard Goodall and puts some of the puzzles of music together, while telling the story of music.
Not much guitar, but a lot of music!
There are four series, Melody, Harmony, Rhythm, and Bass.
They can be found on YouTube - unfortunately they have not (at least not to my knowledge) been released on DVD.
Links to part 1 of each serie on Youtube:
Another Howard Goodall production you may find interesting is this:
Enjoy and expand your musical mind