I have a Sharp LED television and Samsung Plasma Television. Using the HR44 and HR24. On the Sharp tv I use dot by dot mode instead of stretch and on the Samsung Plasma I use screen fit instead of 16X9. However, I have noticed on both tvs that HBO/CINEMAX will have a thin black bar on top and no bars on bottom, and on Showtime, no bar on top but a thin bar on bottom of screen, this is most noticeable during "Dexter" and "Ray Donovan" However, if turn the stretch mode on the sharp & 16X9 on Samsung the bars are gone. I had assumed that these channels send out a 1:77 16X9 signal that should fill the screen like the other channels do.