I have just one stuck pixel on my new flat panel iMac, about four inches from the top of the screen and 2 inches from the middle. (so, its just up, and to the left of center...i dont think i made it clear)
its white, so shows up pretty much all the time, but I hardly notice it now.
When I first spotted it (just after installing all the software) I phoned Apple UK and was told that "Apple will not fix or replace screens unless they have a minimum of 6 stuck or dead pixels."
Oh well, one pixel is a very small price to pay....