You forgot to mention Scott Drave's Electric Sheep installation in the main Google lobby. Also, where can one find Larry & Sergey's gallery of Burning Man photos? I know they exist somewhere in the halls of the 'plex.
The Drave installation is actually called "Dreams in High Fidelity," a "painting that evolves" — in other words, a really purdy high-def screensaver. If you know where the Burning Man pics are, by all means say so.