So, I've always had a problem with my Terminator Special Edition DVD, its always been a bit flakey ever since I bought it, some DVD players didn't like the disc, others were fine. Anyway, its been a few years since I've seen it, and so I popped it in for the first time on my current player, and it wouldn't read the disc at all. The player itself is a little flakey right now, but I checked the disc anyway, and there was a layer of scum, (for lack of a better word) covering the data side, almost grippy in nature. There was also a very fine layer of gold dust on this substance. Anyway, it makes the DVD opaque, and thus unreadable. I took the disc, washed it off with warm soap water, dried it and cleaned with a lens cloth, and it the disc works better than it ever did... Which is my question, what the hell is this coating? Its actually present on the bonus disc of the Terminator boxset, and I've cleaned off half the scum, so you can see what its doing. The right half the disc is now all reflective, and the left side is murky. If you need any better pictures to see whats going on let me know. Anyhoo, what is it? Whats going on? Oddly, it seems only to have affected these two discs, nothing else as far as I know.