Philipp Lenssen and Tony Ruscoe of the excellent Google Blogoscoped blog have put together a very fun collection of screenshots and information about the Google Intranet and related pages. The post discusses the intranet homepage, called Moma - Inside Google, the experimental intranet search called Moma Next, projects like Google Dogfood (as in use new versions of our apps and eat your own dogfood) and more. Below is a leaked screenshot of Moma, with specific information politely grayed out by the Blogoscoped team.
We can only imagine what kind of information about genetic cataloging, brain implants and the search for sustainable energy sources in outer space are displayed on these pages. I kid, it's probably fairly mundane. I'm sure Larry and Sergey have an entirely different interface for all the really creepy stuff, like the most damning images captured by the Google Street View car.
In order to get into character further, your pretending to be a Google employee may be even more informed by a read through of Nick Carr's widely discussed article this week titled The Google Enigma.