10/GUI - The Future of Multi-touch UI

"Over a quarter-century ago, Xerox introduced the modern graphical user interface paradigm we today take for granted.

That it has endured is a testament to the genius of its design. But the industry is now at a crossroads: New technologies promise higher-bandwidth interaction, but have yet to find a truly viable implementation. 

10/GUI aims to bridge this gap by rethinking the desktop to leverage new technology in an intuitive and powerful way." - 10gui.com

This video is a must watch for anyone interested in human-computer interaction. It details some of the major barriers with current multi-touch technology being used on the desktop and concludes with the most pragmatic and realistic vision of multi-touch on the desktop I have ever seen.