In which I check to see if I like the London 2012 logo yet. No, I don't.
In which I point to petitions about the Olympic Logo
In which the Olympic Logo is revealed
There are now a range of icons based on this logo, so you should be able to find one to your tastes and include it on your site.
Yes, this post was a thinly veiled excuse to link to the 'icon code' page.