For those that don't know..Google Doodles are the illustrations you see on the google homepage for the search engine. They only do the doodles (that sounds odd) occasionally to celebrate certain events/birthdays/holidays/etc.
Click here to see a gallery of 2012 doodles. You can choose go to different years too.
One of my favorites was for Thanksgiving in 2011. Click here for the interactive version.
Now here is a video on the employees at Google that are the official "Google Doodlers"
sidenote: What a neat job title! Click here if you know any artistic young students so they can submit their doodle or the chance to be on Google's homepage.