The CD everyone should have on hand in case of system failure. There is no reason why you should ever lose data becausey our OS died again! Just pop in the knoppix CD and boom, you are on your way to copying over any data and restoring your system to it's glory. And for any of you Gentoo nerds, why sit there and do nothing while isntalling, fire up knoppix and use that machine the way it was meant to be!