Multi-touch user interface

This video has been doing the rounds everywhere recently but it is just so cool that I have to blog it.



This looks like the hugest leap in user interface technology since the mouse (and it makes the mouse look as antiquated as paper punch-cards). I just hope that it's not such a massive paradigm shift that it takes 10 years to become affordable and widespread.
The potential for music making alone is huge (especially if it has pressure sensitivity for each touch point).
It also looks to be a more natural method of input and I wonder if it could alleviate RSI from keyboard and mouse usage.