If it's a dead pixel, not really. If it's a hot pixel, you could try running JD Pixel Fixer in your web browser for an hour. Otherwise you might try softly massaging it out with a warm, damp cloth. Basically you need to gently apply pressure over the pixel with your finger. Just be careful not to damage the screen (which would be worse than a hot pixel).

I myself have a hot (red) pixel that hasn't come unstuck by any method. If this happens, your best bet is to try and ignore it - even if you could RMA for this, you probably wouldn't want to. Luckily its at the edge of my screen.