Scoble has a good take on a debate that he heard at bloggercon: do production values (in video/audio) matter?
In the discussion it was clear that there is a coming conflict between people who "do it for love" and those who are doing video to build an audience, which presumably they are doing so that they can sell advertising or get sponsorship. In other words there are those who believe in production values and those who think that the production values advocates are missing the point: that everyday people can now use video to communicate in a new way.
I think he gets that right - it all depends on the type of information, and the target audience. If I'm doing a screencast on Smalltalk, my target audience is developers - if they are interested, then production quality has to be "good enough" - my voice has to come through, and the screens I'm showing have to be easily visible. If, on the other hand, I'm trying to produce a drama series that people will watch (like they would watch TV), then my production requirements are way up there - the last thing you want is to be seen as the next Ed Wood :)