Plextor will soon be launching the PlexEraser drive which will completely eradicate all signs of previously written data to any optical media out there. Generally a DVDRW or CDRW can be erased with a regular $40-$60 drive but for those with pressed discs or write-once media, the PlexEraser can be used to delete data on the disc and destroy the media forever in 6 minutes.
I don’t know why, but I have a feeling that this will be far more expensive than it should be. Considering the price of scissors or a hammer, it would be hard to justify purchasing this.