The 2008 Summer Olympics in Beijing, China start officially today. To celebrate the day, Google, Yahoo and Ask.com all have logos and themes up. We also have our theme up, we hope you like it.
Here is Yahoo's animated logo:
Dogpile and Live Search do not have themes. It would have been nice to see a custom background with Olmypic "hotspots," maybe next year.
Forum discussion at Search Engine Roundtable Forums.