Owning my first LCD for over a month, I have to say it is definitely broadcaster fault for lousy looking SD on LCD HDTVs.

I only get OTA local channels (about 24 ch.) and about 60% of them are in SD, and most of them look pretty darn good. The ones that look bad are sub digital channels as compression and artifacts rule these channels.

I am guessing they look bad due to bandwidth limitation. My Tv is only 32 inch and I imagine these channels will look worse on bigger screens. So next time somebody said that SD programs look bad on LCDs due to upconversion, most likley the blame go to broadcaster station, not the TV