Pop-fly rocks
Pop-fly is one of the most amazing piece of coolness that Microsoft shipped. From the domain name to the interface it's cool all the way. See my rotating image sphere here. Not: that this'll install Silver Light (which is less than a mb).
It took me about 15 mins to get this done. I just dropped a Flickr block and a PhotoSphere block and connected them. Voila!! I have a rotating sphere with the images I put on Flickr swarming on it. This runs on SilverLight so my friends running Safari on a Mac can see it!!