This is a bit of topic, but in view of John's posts regarding ISF calibration, I offer the following: While it might be best to have one's TV calibrated by an ISF certified calibrator, there are many calibration disks available in the marketplace. I've had Avia for several years and I confess I haven't used it of late - definitely not on my 37" Vizio 720p, and probably not on my 55" Sony RPTV. That being said, I've done a bit of investigation on what's available in the DIY marketplace and was surprised to learn that the most recommended product is from Disney! Disney WOW: World of Wonder [Blu-ray] gets lots of raves, far more than Avia II or DVE, and more than Spears & Munsil as well. It's available from Amazon for $25.99. The Imaging Science Foundation offers a HDTV Calibration Wizard DVD for $29.95 - www.imagingscience.com -- you can also find a listing of ISF certified technicians there. Click on the Dealers tab.