[youtube]Bu927_ul_X0[/youtube]
http://mail.google.com/mail/help/motion.html
A new way to communicate
The mouse and keyboard were invented before the Internet even existed. Since then, countless technological advancements have allowed for much more efficient human computer interaction. Why then do we continue to use outdated technology? Introducing Gmail Motion -- now you can control Gmail with your body.
http://mail.google.com/mail/help/motion.html