Flex OSX Style Transition?

Hi:

Im on the hunt for something I saw on the Macromedia XML News Aggregator a while ago. Somebody created a page transition in FLEX that looks similar to the Fast User Switching in OSX. It looks like there are different interfaces on the surface of a cube... you can navigate to other interfaces and the cube spins 90 degrees to show the other interface.

Does anybody know where I can find this?