Stream UK has worked with the Hay Festival (http://www.hayfestival.co.uk) since 2001 and we’ve webcast everyone from Al Gore to Sting.
The example shown below shows the basic format: nice staging, well lit and three cameras. What you don’t see is the satelitte uplink facility which makes the live broadcast possible.
Way back in 2002, when Stream UK was but young, we did a big webcast for the Royal Society.
It was David Attenborough, talking about how to film and boy did we make sure we got it right…two can loads of kit and over 7,000 viewers resulted in something we’re still prepared to use as a case study today.