I agree with Jay, but I also agree with the sentiment of Erik to an extent. Yeah, they're not supposed to be extremely visible, if at all. Like Ash said, it's the poor color timing of the discs that make them stand out. But, honestly, the more times I see any movie with optical compositing, I begin to notice garbage mattes I'd never noticed before. I was watching Star Trek II a couple of months ago, and, even though I'd seen that movie quite recently and never saw any before, I began to notice garbage mattes. And the same thing when I saw Back to the Future Part II a couple of weeks ago. An amazing DVD set, and I never noticed garbage mattes before, but now I suddenly saw them. I think it's possible that my eye is becoming more discerning in these matters. They're there. Always. That's all there is to it. And most of the time, they're hidden to the point of not being a distraction. So, no, I don't think they should be removed. They should just not be made any more apparent than they were supposed to be. A keen eye might catch one on occasion, but they shouldn't be jumping out at you.