Geez, I'm sure I've sprouted praises for his DVD series before, but I just finished watching both sets and they are AWESOME.
Chris, are you still using the same setup to capture gameplay video as was mentioned in the first set? If so, that's amazing! The captures look great, but still maintain that "TV" feel, unlike Emulators. I really like them and can't wait for the next DVD to come out. Watching them on the couch (with the "memory" commentary") is far superior to watching them on Youtube at my desk.
One other thing - have you ever considered releasing the game audio as mp3s? I'd add them to my music collection in a heartbeat. Maybe that can be an extra bonus for your next DVD.
Thanks again!