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Quick lesson in such matters that I've learned lately. Standard def pictures (including regular 480p DVDs) will not look good on many HDTVs over high quality cables. Keep your regular DVD player hooked up via composite/RCA. The reason is that the analog signal conversion that takes place pushing video out RCA makes it "smoother" and it will look less grainy. Digital outputs (HDMI, Component, et cetera) from SD to HD will carry along most of what doesn't look good in the picture. Many people experience the same issue with SD channels from cable. Some folk go so far as took hook their cable box up to their TV with both HDMI and composite cables, and switch inputs when they go from SD channels to HD channels.
Some HDTVs, however, do a much better job at intelligently altering the picture. Sharp Aquos sets and most Mitsubishi and Sony sets are known for making nicer pictures from SD. It's a mixed bag though, and everyone's results will vary based on equipment and cables. Also, BR-DVD systems, currently, will not upscale standard DVDs well, if at all. HD-DVD players, however, work within roughly the same standards, and the ASICs in nearly all HD-DVD players can help in this situation.
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The prospect of achieving a peace agreement with the extremist group of MILF is almost impossible...
-- Emmanuel Pinol, Governor of Cotobato
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