Most of the times I'm at a lack for words to describe something, it's because it's something incredibly absurd or stupid. Here, it's because THIS IS SO DAMN RAD!
Stop whatever you are doing. Go watch the video of this, right now. I don't care how important what your doing is... Watch this video, right fucking now.
You are about to see the best thing thats happened to the GUI since the pixel.
Update: Ok.. So only people who litter their desktop seem to think this is as cool as I do. We are apparently a fringe minority. To those like myself, this is fetish UI porn. I currently have 68 files and folders (no app launch shortcuts) on my desktop. I would _love_ this.