Wow. This is a strange one. According to this video, you can clean your CDs or DVDs using a Banana, a Banana Peal, some Window Cleaner, and a Soft Cloth. (I found this clip while searching for healthy foods! Thanks to the folks at Neatorama for posting the clip.) I just tried this, and it really works!
How To Remove CD Scratches With A Banana – video powered by Metacafe
That’s just wierd and messy. I will stick to soap and water.