High-Tech Whiteboards in Schools Using OSX

the white boards have been around for 3-4 + years. And i have seen demos at every mac world i have gone to.
For clarification: There is a beamer on the wall that is connected to a computer, for example Mac OS X, and it gets projected on this wall, then you could use pens to write over the projection. We have those at my school, (about 10) so I know it.

PS: It works with Windows XP, Windows 2000, Mac OS 9 and Mac OS X

I use a SmartBoard fairly regularly with my MacBook. It's a great combintion - OS X is particularly well suited this this method of human interface, better than Windows IMHO.