How do you get a scratch out of a disk

The best fix i have found is to buy some special disk cleaner:

http://www.gamestop.com/Catalog/ProductDetails.aspx?product_id=76125

I have the exact same kind, and it almost ALWAYS works! It also works on other disks. Or, if you don't want to spend money, run it under cold normal tap water (the back side of the disk), and then dry it with a 100% cotton rag.