The London 2012 Olympics kick off in a few hours and the opening ceremony is just around the corner. To celebrate the special day, Google and other search engines have special logos for the event.
Today on Google, you will find the special Google logo for the opening ceremony. You should expect the Google logo to change daily or even more often, based on the which events are happening during the olympics.
Here is the Google Opening Ceremony logo:
Google already is showing the archery logo on some Google properties:
Bing also has a theme on their live background image that will likely change throughout the days of the Olympics.
Ask.com has an olympics swimming pool:
Yahoo has an animated logo, here is a static picture of it:
I am sure more logos will come from more search engines in the near future.