The folks at SprintDroids.com forums have alerted the community of some users reporting their EVOs having dead pixels. A dead pixel is essentially a dot on the screen, permanently stuck in one color.
It's not entirely uncommon for LCD screens to have dead pixels, and you can certainly ask the retailer where you bought the EVO to exhange it. The question is: is this problem worse with the EVO's screen?
Does your EVO have a dead pixel problem?