I'm currently trying to track down most of the stamps issued for the Vancouver Olympics. I loved the logo and the colors used and many postal administrations used these colors on their stamps.
I won't post the images for all but I'll provide a link to a site that has all (or almost all) sets issued:
http://www.sportstamps.org/olympics2010stamps.htmlSome really nice stamps in there.
I'm not usually an Olympics stamps collector, although I love the Olympics but I was interested in the Vancouver games since I'm Canadian and was very proud to be 'old' enough to follow consciously an Olympic games in my home country for the first time.
In 1988, I was only 8 and cared more about riding my bike and playing hockey/soccer (glad I did that because kids should be outdoors half the time!).
And I've become interested in at least having the stamps from the host country.