If you would like to present at an upcoming dorkbot, let me know.
Here's the February 25, 2009 Google Earth file, and the SketchUp file. For it to sit properly in Google Earth, you have to turn "Terrain" off. Extra dork points for anyone who tells me what building it's attacking.
Here's the April 8, 2009 Google Earth file, and the SketchUp file. For it to sit properly in Google Earth, you have to turn "Terrain" off.