Dave:

I am not a quiet person. If I'm in a room, it's likely that you'll know I'm there.

     

More on software demos. I have recently wrote that doing demos of your software is a great marketing technique. After some more browsing I found that some people call such demos "viewlets" and that there's a tool for making viewlets. You can read other people's opinion about this tool here and here. There are some viewlets to be found here.