When I took it in in August, it was much worse than it is now. The tech at the Genius Bar took a look at it, said, "Well, it's damaged, and we don't cover damage. That problem never happens unless there's been some trauma to the machine, and I see you have scratches on the case. It's a $700 repair."
Trouble is, the scratches on the case are sliding it into and out of my backpack, and didn't correlate to when the screen started misbehaving.
That's the last time I pay for AppleCare, and possibly the last time I buy Apple. I'm considering a Panasonic Toughbook.