I got through the first disc and listened to Moore's commentary for The Bonding. It was really good. Lots of good anecdotes and history about Moore's intro into Trek. The Okudas are really good moderators, making sure the good stories are told. I look forward to his other commentaries. Fingers crossed that he really does comment on every episode he wrote.
Moore's contribution to Star Trek VI? Wow, how awesome for him. (I won't spoil it)