This is amazing, I talk to one of the developers at the SciFi Convention from IBM. It will act similar to ROM, but really is RAM and uses Quantum tunneling technology. We are now geting Spintronics into our hands. More info See http://www.research.ibm.com/resources/news/20001207_mramimages.shtml
Cool. Not sure about the Magnetic bit though.... I mean couldn't that damage the other components of the computer?
It's not charged magnetic like you might think. It's magnetic like your Hard drive is magnetic. That way it can be easily writen to thousands of times. The really cool thing is that it is faster than SDram.