On Sat, 7 Nov 2009 15:57:06 -0800, CWLee wrote:

I have a number of DVDs containing
computer backup information of a
sensitive nature. I plan to throw away
the older ones, but first I want to
render the data on them irretrievable.
Can anyone here recommend a quick,

3 seconds on high in a microwave oven.

Put a disposable cup under the dvd to avoid any mess from melting
plastic.