Well, like someone else mentioned, that an HDTV, will show way more flaws in the source recording than an analog TV can. I never said it looked WORSE though, but it looks nowhere near FILM-LIKE! Anyone who thinks so, really needs to go to a THX certified cinema immediately and compare the two...
I can assure you, that this wasn't the case. The DVD player was set to output progressive scan, as well as 16X9 Widescreen (as opposed to 4:3 letterbox). The TV itself was also in the correct full mode, where anamorphic DVDs automatically would stretch themselves out, and fill the screen...
You know, I had never in my entire life watched an HDTV display a DVD. That is, until about a week ago, when my mom's best friend (from work) bought a Sony 48" Widescreen HDTV. She had it ISF calibrated and invited me over to watch DVDs with her. I took some of my favourite DVDs that I have read...