Google has launched an experimental feature in Labs called (Just have a try)that gathers similar results together and displays them in bubble-like groups, or swirls.
For example, if you search for "Paris" you see layered results: The first features pictures of the French city, and the second shows photos of socialite Paris Hilton. Click on the Paris, France collection and it will "swirl" open into a circle of images, which become larger as you put mouse over them.Here is the on this.