This is a trick that a lot of people already know, but just in case they didn't I posted this.
Step 1: Gather the Materials
The Needed Materials for This project are:
1.) A scratched CD
2.) White toothpaste (not the gel kind)
3.) Warm water
Step 2: Get Er' Dun!
First get you CD and smear the toothpaste on the scratched surface (NOT TOO MUCH, ONLY ENOUGH). Then rub it around a little with your finger in an up and down motion, NOT A CIRCULAR MOTION, IT WILL RUIN THE CODING. Lastly, rinse it off with warm water in an up and down motion.
And Voila! A usable CD!
Step 3: After the resurfacing ( An after picture for weissensteinburg)
This is a different CD, not the blue one. And I am in the process. But anyways, note how the CD isn't too scratched.