Last Wednesday, I was invited to the Visual Studio Talk Show, a French podcast about software development. I enjoyed the experience a lot, but can only understand how you can be intimidated when it's the first time you express yourself such in a "live" way. I may have experience teaching in front of a small crowd, or presenting in front of a larger one, you cannot prepare yourself in the same way when you're an invitee, and depend on your host's questions and direction.
For example, everybody agrees that Scott Hanselman's HanselMinutes improved dramatically, no later than starting with his second podcast. That's probably why I'm left with mixed emotions. I'd repeat the experience anytime, just to have an opportunity to improve. But this time, I'd be the driver!