Multi-input touch screens

Multi-input touch screen demos (Flash required).  This is probably the coolest thing I’ve ever seen.  The more I watch it the more I want to make it work.  It definitely feels like that’s going to be the next generation in computers.
I want one for my Desktop, and more importantly I want to make sure X supports it.  I wonder if my laptop’s synaptics touchpad could support this with some tweaking of the driver.  It could be interesting if I could make two finger movements different scrolling axeses/window management shortcuts.  (Two finger outwards movements stretch the current window, two finger parallel movements could move the window.)  I like how in my iBook two finger parralel movements is how to scroll.