The IET has an awesome ceiling in their lecture hall. And microphones between every other seat!
There is a full writeup of Richard Stallman talking about a free dital society over on my website.
Richard Stallman is something of a legend. He singlehandedly launched the Free Software movement, and the GNU project and has been campaigning for software freedom for almost as long as there have been usable home computers. I jumped at the opportunity to see him talk at the Institution of Engineering and Technology. His topic was "A Free Digital Society", and he spoke on the various problems — nonfree software, software as a service, invasion of privacy, and such — that are often ignored by the discourse of digital inclusion.