To complement that vein of functionality, I present to you exhibit B.

Watch the stream of characters in the bottom-left corner of the screen as [Corey](http://twitter.com/coreyhaines) works his way through the kata. I am not familiar with the tool (perhaps someone in the audience knows it) but I fell in love with it's purpose immediately. While not practical for all scenarios, it is something that can be very useful for viewers to follow along with during a presentation. You could even filter it to only show keyboard shortcuts (like Keyboard Jedi).