I'm totally amazed at the ignorance of 90% of the salesmen that I have talked to that sell $3K HT's. I called EVERY stored in the Madison phine book that listed they sold HT's. There was only ONE that knew what a Calibration disk was. I went into 4 Super Stores (BEst Buy, AmericanTV, . . . .) and asked and 1 of the 7 salesmen had heard of one. 3 said they were not needed. How can people sell systems that cost $3000 and not know about tune-up disks. One KID at Best Buy in the DVD section knew what they were and actually had one and said it sucked they didn't have any. The Only place that had any was Paragon Video that had 2 but they were store copies. IS HT that new? Or are stores just missing the boat. I find it amazing that Blockbuster does not have them.