searchCrystal
Check this one out! The graphic above is an embedded object from searchCrystal that lets you search multiple sources for images (or other forms of information). I've preloaded it to search for "inforgraphics" from GoogleImages, Flickr, AskImages, YahooImages and MSNImages. When you dig a little deeper, you can choose the different sources you are searching from, save searches, share results with others, etc.
The arrangement shows the overlap of the results from multiple sites. Simple navigation like scrolling over images enlarges them, and clicking takes you to the source image.
Also works for video, blogs, tags, news, etc...blah, blah, blah. We only care about images don't we?