Another "Minority Report" UI using Wiimote camera and gloves:
Should be possible with Natal and PS Eye too.
I think Dr. Marks and Anton did a good job showcasing PS Move:
http://kotaku.com/5500300/playstation-moves-minority-report-controls-in-action?skyline=true&s=i
...but tech demoes like these are aplenty. It's difficult to stand out with piece-meal tech demoes alone.
I'd love to see a PS3 UI based on the new Playstation Home world map UI. It allows me to navigate seamlessly between 2D and 3D. In 2D, PS Move should allow me to flip, peel, stack/layer, scroll, pick, drop, throw, and attract items. The XMB-like world map is quick and easy to manipulate. Since no 3D world is loaded yet, the startup time can be short. I think Sony should also enable hand gestures in the 2D world map. Even though gesturing may only work under good lighting conditions, or with large enough hands, it gives the user freedom to choose where it's most convenient for them. The PS Move controller is always a good fallback (but need to hunt for controller sometimes).
In 3D, PS Move would do away with the awkward object selection mechanism in Home. It adds pop-up window and contextual menu to the interaction. The in-game Home avatar can also be animated according to the puppetry demo we saw last week.
While online (e.g., LBP editor, video conferencing, chatting), the PS Move can show my online partners' hands in 3D -- especially on 3DTV.
Similarly, the Photo app, Life with Playstation, and PS Store should be enhanced with PS Move control schemes. The light ball would be useful as an alarm, ringer, reminder, trigger (e.g., incoming email), or music visualizer.