Probably the greatest benefit that marketing and advertising gives to the world is the ability to invoke desires from potential consumers. While this is just a concept video from TATmobile, if touch screens could do this today and have a low cost of ownership, I would be one of those pushing demand for these products.
Watch the video.
[Edit: 3/5/2011, we may never get the chance to see this as TATmobileUI has been acquired by Research In Motion, Ltd., and is now tasked with developing UI for the Blackberry ecosystem.]