I wonder if they actually already have this interface designed, or whether it's just a bunch of preset animations with good acting to make it look real. There's been previous posts on DC about similar stuff, so it could very well be real.
I don't think this would work very well for a generic user interface, but for specialized stuff like shown in the video, it's cool enough. Seems intuitive, and lets you Just Do Ittm instead of worrying about the boring techy details.
A thing I'm not impressed about, is how laggy and unsmooth the animations seem. It's the same with flash, powerpoint presentations, etc. Come on people, we have insanely powerful CPUs and GPUs now, yet animation was smoother on my amiga, more than 10 years ago.