actually, that's a lot how the Monkey Island panel went. They took audience suggestions for dialogue (they were making a scene for us as an example) and found 'voice actors' to pretend to be LeChuck and Guybrush, had them record a few voice samples, and then the animator/choreographer/sound guy put it all together while the rest of the panel was talking about game design and their experiences. Then they showed us the brand new scene!
so it would be cool I think to have a multi-layered presentation, in that people will be talking while one person is making a stepfile on the projector screen, and if you don't want to watch that you can just listen to the talk or something.
when I get ahold of the videos I'll have actual evidence to provide rather than my confusing explanations. >>;