WOW i haven't looked at this thread in a while, and their weren't any responses the last i checked. I would like to clear up a few misconceptions that have been thrown around.
#1 - using the method shown to calibrate your tv is not really beyond the scope of most people that are comfortable fiddling with tv's or computers.
#2 - you cannot calibrate a tv with a 'calibration' disc. you need one for the test patterns on them however, when using the above method.
Yes you can, and just as light sensing equipment in curts page does a better job in some cases, there is equipment costing thousands of dollars that do it better than both the aforementioned
#3 - most importantly, calibrating a tv is not the same as doing it 'by eye' or following someone's settings! "But it looks good to me" is not the same as CALIBRATED. calibrated (as the guide makes clear) means your tv is set to follow ESTABLISHED settings for color and brightness. when a movie or tv producer films something, their professional equipment (cameras) are also set to these same standards, so your tv has to be also set the same for it to reproduce correctly what was filmed. it should be noted that when some people have their tv's calibrated THEY DO NOT LIKE IT since they are used to pictures that are set to catch their attention (i.e. brighter, more saturated colors, etc.). it's fine if you don't like a calibrated picture - it is, after all, your opinion. but there is only one way to calibrate a tv - either it is set correctly (or at least as close as you can get it) or it is not.