Today is Moon Day, it was celebrated widely last year by the search engines because last year was the 40th anniversary. This year, it pretty much has gone unnoticed or unrecognized by the search engines.
We have a logo today:
Google had a logo yesterday on Google Korea for Nam June Paik. He is considered the "first video artist." Check out this awesome doodle:
Finally, Columbia has a logo for the Doodle for Google competition there.