though u r dvd is working perfectly now..
i found this on you tube sometime back. and if the video is genuine maybe even the trick really works.
how to clean scratched cd with banana .
YouTube - How To Remove CD Scratches With A Banana
look at the video closely. ..before cleaning the cd had some scratches and then in the end most of the scratches..
dunno if u can believe the video ?
if its this really possible..maybe i need to try it with some old disc ..and a banana !
PS: Try it at your own risk and a fresh banana
EDIT : they say it even removes scratches off a ipod ..we should ask Mr. Steve to give a banana free with ipod