I just purchased a Hitachi 53" widescreen model, but when I watch a DVD in normal 4:3 original aspect ratio or full 16:9 original aspect ratio, I still see black bars on the top and bottom of the screen. They are not as wide as on a 4:3 regular TV (letterbox), but they are still there. This is so even with a widescreen DVD like Harry Potter. I thought that the picture would fill up the screen like in a movie theater. The salesman at CC said it all depended on the formatting of the movie; the techie at Hitachi didn't know what I was talking about, but ultimately concluded that there was no problem with the set. Regular cable TV fills the whole screen if I use Fill 4:3 zoom (although the heads are too stretched) or smooth wide 4:3 expander which stretched out the sides. Thanks for any help.