September 2008 officially marks Google’s tenth birthday (though the exact date and/or age is still a bit of a mystery) and the company has trotted out its 10th Birthday website in celebration.

Appropriately, little Easter Eggs are showing up in some of Google’s services. Here’s our favorite: The Street View Guy has a hat and a handful of party balloons. In the screenshot above, he is levitating over our office. More specifically, the Reddit engineering squad.

Have you seen any other Easter Eggs? Leave a comment and let us know. Picasa photos of you eating cake while searching the internet in your underwear don’t count, but don’t let us stop you.