At TechEd Developers in Barcelona, Spain last November, I did an interactive session on ASP.NET Scaling tips. It was such a hit they had to move it to a large room-very difficult to make an interactive session. I took tons of questions and just had a conversation with the audience-and even had some rebel rousers in the back who I had to mock publicly. It was a great session (at least I think so).
Turns out that they filmed it behind my back. That is cool since now it will be published on MSDN Spotlight. You can see it here.