Myth #5
An HDTV set automatically converts all programs it receives to HDTV.
Fact: HDTVs can stretch a standard definition (SDTV) image to fit their screens, but they can't magically add resolution. Since SDTV has only 640 x 480 pixels, hi-def TVs tend to magnify the fuzziness of standard-def video — sometimes making it look worse than it would on a non-HDTV set.
That should really say that all LCD and Plasma TVs make SD worse than on a non HD TV, especially if the non HD TV is CRT