Just before christmas we finally released the videos the BBC recorded at the last user group. Production and post processing has all been done by the BBC. We're extremely thankful to them, both for hosting the user group and recording the event.
We've created a playlist of all the videos, so if you have 6 hours to spare and want to know more about the current state of Varnish Cache go and watch. Or just pick a few.
The videos are all Copyright 2012 British Broadcasting Cooperation and available under a creative commons license.