Microsoft Gaming Inovation: Play Anywhere
The Video says this is a Microsoft User Interface Prototype called Play Anywhere. It seems to be some sort of projection device, which is also interactive. The video shows the device projecting images onto a surface, and someone comes along and starts interacting with it. He could place objects on the table and images would be projected onto them, which then interacted with other projected objects on the table.
I love interface demonstrations, and this one is pretty good but I'm doubtful that it will ever become a real product.
Link (via Giant Mecha)