A while back, I was visiting a friend who studies at Carleton University in Ottawa when he showed me one of his amphitheater classrooms. There was no class going on and the room looked interesting to me. I had to take a picture or two of it and had my trusty point and shoot on me. A plus was the ability to vary the intensity of light and the source of light in that classroom.
The room is called the Bell Theater which is part of the Minto Centre on the Carleton University campus.