Lightscribe, uses the DVD-Rom burners laser to print lables.

http://www.lightscribe.com/

http://en.wikipedia.org/wiki/LightScribe

Lightscribe, a disc etching technology developed by HP, allow users to produce smudge-free, high resolution, professional looking discs without ink cartridges

It uses specially coated recordable CD and DVD media to produce laser-etched labels with text or graphics, as opposed to stick-on labels and printable discs.

http://www.lightscribe.com/flash/LightScribe_Demo_Web.html