In Pictures: TV Calibration - six tips for a bette...
The best way to make sure the brightness and contrast levels are correct is to look at the black levels. Play a DVD and use the black letterbox bars as a reference. With the contrast up, adjust the brightness until the black levels are deep without losing detail in the image or washing out colours. You will need to find a setting that is pleasing to your eye while also trying to keep the black levels as dark as possible.
In Pictures: TV Calibration - six tips for a better image