Jaz wrote:how about a podcast with those who don't wish to be seen on video
It's more a matter of not wanting to be interviewed than a matter of not wanting to be on video. We respect people's right to not take part in this. After all, not everybody likes to be asked questions and have their answers shared with the world, be it on streaming video or audio-only. Maybe they are shy or simply just don't want to do it. It really doesn't matter what the reason is. Channel 9 is all about respect.
Note that we seldom if ever just tape random people, though it does happen rarely, especially when we tour around product teams. For example, we interviewed Herb Sutter recently (VC ++ Architect and ISO C++ luminary) and ran into somebody in the hall that told us all about the experimental compiler framework called Phoenix.
We always set up interviews ahead of time.