Googlle?

As I'm a customary animal, everyday I open my browser and go along the same Internet path. As I'm a faithful Google user, one of the pages I often open is iGoogle. Today I thought my eyes were failing when I realized I was seeing the simplest and oddest Google doodle I've ever seen. Who can I ask about it? Google, of course. The first thing I did was saving that doodle to the disk and its very name gave the answer:
11th_birthday.gif.

Happy birthday Google!