Here's the video I said I'd like to host but didn't know how to. Thanks to servant I do now. I think simplicity is part of my blog's charm. It might even be all of its charm so don't expect too many videos in future. And bear in mind that this video is American. I think there's a bit of hand wringing to the effect, "why can't our media be more like the BBC?" But apart from that it is worth a see and apparently there's a DVD you can buy which is presumably better quality than the online effort.
The DVD can be got from the Media Education Foundation.