This same subject (more or less) has been exhausted elsewhere on this forum. The question was will progressive scan DVD (480p) look better on an EDTV than an HDTV?
Personally I resist the notion that HDTV somehow makes EDTV broadcasts look worse. I've listened to the arguments about scaling and blahblahblah but IMO I think they're bunk. I WILL, however, buy that SD looks like crap on HD as the whole de-interlacing process leaves alot to be desired. Getting back to 480p, I liken watching EDTV on an HDTV as putting a magnifying glass to a print picture in a magazine- essentially you're revealing the flaws of a low resolution picture. This is only compounded as the screen gets larger. The larger the display the more magnified the flaws of the 480p picture become.
This was a subject I was sensitive about when choosing a screen size. For HDTV at my viewing distance (about 8 feet) I wanted a 46", but as 90% of my viewing was going to be 480p and SDTV I decided to go with a 37". The 37" isn't as cinematic as I'd like but at least I can watch my DVD's and SDTV without a contorted look on my face.
For the record, in addition to a 480p DVD player I have a PS2 and GameCube connected thru component and a Dreamcast via VGA. On all three systems the picture is excellent given the game supports the 480p output (practically all GC titles, most Dreamcast, and a few PS2 titles). My only complaint is contrary to the last poster ALOT of games do not have an option for widescreen.
What to do if you find yourself stuck with no hope of rescue:
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-- Excerpt from the Hitchhiker's Guide to the Galaxy.