Now I know myself that this is a silly question but I'll ask it out of interest.
When you have your tv screen calibrated by a professional, are they changing just the picture settings that anyone can change in the picture menu e.g. contrast, brightness sharpness etc or do they have equipment that allows them into some sort of 'secret' configuration menu that allows them to change many more parameters? A menu that would be all too easy for the average customer to use to ruin their tv?
I would like to think it was the latter given the cost of calibration! I'm interested as I had a go at calibrating my tv using the DVD essentials disc and was fairly impressed with the resulting picture. A lot darker than what I was originally using but after time I got used to it and appreciated the realistic colours it produced. Given my impression I would certainly be interested in professional calibration, but only when I get a new TV. I dont think my current set up would justfiy the cost.