Purchasing an HDTV, plugging all the gizmos in, and turning it on to watch without any tweaking is like buying a table from Ikea and assembling as is: it works, and it looks good too, but honestly, it can look better with a few tweaks.
Yes, tweaking your HDTV takes work, but trust us, it's well worth it. By learning how to calibrate your HDTV you will be able to improve picture quality, thereby improving your overall movie or tv-watching experience.
Calibrating your HDTV gives you the best picture and sound on both LCD or plasma televisions. There's no need for a professional calibration; you can do it yourself by following the instructions in this video tutorial.