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The best rundown on what it all means, and what to look for that I ever saw was published in Sound & Vision Magazine in late 2001 or early 2002; I recommend it highly. They also published an HDTV buying guide in the January 2003 issue.

I've had HDTV for about a year and a half, and it is FANTASTIC - when you can find an HDTV program, they've been scarce up to now, but it does look like things are picking up.

"Progressive scan", which is the "p" in "720p", means that the picture is painted, pixel by pixel, the way the image is painted on your computer monitor. The other way to do it is by "interlaced scan", as in "1080i" (the numbers being the number of scan lines on the monitor).

Progressive is actually superior to interlaced, if you can get it; a progressively scanned image of 720 lines has better resolution than an interlaced image of 1080 lines - makes sense; 720 lines of image, versus 1080i/2 = 540 actual lines of image.

Hope that helps!
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