I have been investigating [http://www.blender.org Blender] and it seems like a great tool to create various scenes to show on the monitors in the Spaceroom. With some game logic it would be easy to select the various videos to show on the screen.
The videos could easily be incorporated into some of the main program windows.
Here is small sample video from Blender with a little audio track added using Sonar X1: http://www.spaceroom.org/video/Vujag.wmv