yoda-sama said:

I agree that even if talk of your work goes on beyond the particular shots, it should be quite acceptable, even welcome, to take up otherwise dead air where you didn't make any changes with further explanation.

Poita, are you saying you'd take audio of him talking about all of his work and then edit/arrange that into a topical commentary track? If so, I could see it being interesting, though I do enjoy the flow of a real time talk; but then I may just love the occasional mild rambling and accidental insight that tends to slip in...

Actually I meant to do that, or attempt a picture in picture version that has the part being discussed in a window while the movie continues on, or have the movie pause and other video play during the crucial bits of the talk and then continue on. I've seen it on a few bluray titles and I like the effect.