I have both DVDs. Both very useful, but only buy them if you have some experience. Neither is for beginners.
The good:
- JH is an incredible player, and he takes a lot of time to show you how to play 'sweet' and laid back. Listen to his style.
The bad:
- The theory explanations are sometimes quite weak (take the 'ditone' chapter, which is really an application of #5#9 chords, or the "major 7 on steroids", which are really min11's). However, the music sheets given as pdf do use more traditional terminology, which should clear up any doubts.