This is a pretty neat technology from HP - no more messing about with sticky labels or cd-r pens, instead the technology uses a chemical on one side of specially-coated discs. Once you have burnt the data, just flip it over and the image/label can be etched onto the disc using the same drive (though you will need a new Lightscribe compatible drive, available Summer 2004).
See the details here: http://www.lightscribe.com/