Gregg has already gotten so much praise for his calibration work that what I'm going to say isn't going to be very revealing. Not that that's going to stop me. Gregg calibrated my 53" Panasonic HDTV about 1 1/2 months ago. This is the first time I've had a TV calibrated. He spent 5+ hours optimizing & tweaking my set exhaustively as others have reported. He explained everything he was doing along the way (even if some things went above my head). We talked about our obsessive hobby that is home theater & joked about stuff. It was great to talk HT tech & not feel like I was talking jargon (like I do with most of my friends & guests). I had a fun time & ended with a TV that looked fantastic. Greeg told me my TV was among the 20 best he'd ever seen out of the box. Yet, post-calibration, my wife & I noticed greater clarity, better rendered colors & more lifelike images like we'd never seen from our TV before (or any TV we've owned for that matter). Gregg left. A week later, I noticed that my TV had a speedbump anomaly in its 480i/p mode. I called Gregg & he kindly agreed to stop by my place yesterday on his current east-coast tour. I made a 480i/p plastic grid overlay before Gregg came. He fixed the my TV's speedbump anomaly by re-converging 480i/p to the grid overlay. He was done in just an hour. My TV is perfection now! To top it off, Gregg didn't charge me anything extra to perform this fix. Greeg said he likes to take care of his fellow HTF'ers. How true! Thanks much Gregg. We're enjoying our TV to the max thanks to your terrific work!