I've heard of gently massaging dead pixels to get them to work. Never did it myself, but it's worth a try.
I'm pretty sure that only applies to stuck pixels, not dead ones. Stuck pixels are always on but are always one color, red, blue or green. Dead pixels are always off and appear gray. There's nothing you can do to bring them back afaik.
You know, I've always been very OCD about the condition of my computer. I couldn't stand it if there were scratches or other cosmetic flaws. When I owned a PowerBook G3 with a 1034x768 resolution with a single stuck red pixel I was really bothered by it because my eye was always drawn to it. The same thing happened with my iBook G4 (it had a single stuck red pixel, too, go figure). But then I got a MacBook Pro and it has one dead pixel somewhere near the top right corner. But with it's 1440x900 resolution I honestly NEVER notice it. It's just so small. Maybe that's the difference between dead and stuck pixels, but even I'm not going to complain to Apple about this one. The machine is so wonderful, I don't feel like it detracts from the experience of using it at all.
So my advice is just get over it. If it's stuck and not dead you can try the massage technique or use one of the various apps or widgets out there that flash a bunch of colors on the scree to attempt to "unstick" it. If it is dead, on a 1280x800 screen, what's one tiny little pixel?
