(forgive it this question has already been answered, I searched and didn't see....) I bought several boxes from a local video store clearing out stock. Goods ones too! Some were probably cleaned up with a buff thingie. Some scratches, some with removable "stuff" (smudges, fingerprints, sticky mystery food, some I'll have tested in a lab later, etc...) I'm using EMSA diskcheck to scan the surfaces. The amount of scratches, unremovable stuff, doesn't seem to matter. Some are going to show errors no matter what. Question.. Anyone know how reliable EMSA is? I've found that when I have a flawed one, such as ...say Universals Hammer Collection that skipps and spudders, etc... it will catch the errors on those. Biggest question though is can you put DVDs and blu rays (since I can't use my PC for blus) in my player and fast forward from the beginning of the disc to the end will it check all the data on the discs unless it hits an error? Some errors just stick for a little bit then continue? Is the laser always seeing 100% of the discs data or just skipping through? It does look like it's skipping through on the TV screen. The DVDs were a dollar, the blu rays $2. So it's no great loss. But I did get quite a crazy tall stack of carefully selected gems... well, mostly. Anyone ever seen Black Supaman?