CityWall has been around for a little bit now, offering a giant multitouch display of maps and other service-oriented features. But now the Helsinki Institute for Information Technology just launched their new 3D UI for the interactive display, which makes it look super futuristic and awesome.
While not actually 3D in the physical sense, the UI is fully rendered in 3D. As the video shows, groups of files are represented as spheres, which can be manipulated in every which way. You can even look at the photo thumbnails inside the sphere “from behind.” Though the demo is thin, it shows some really interesting ideas at play.