Hey all, HDTV newbie here..just got box installed for Samsung HLP5063W. Does screen size vary by program? I was watching "Vertical" on INHD, and it was broadcast in 16:9. Then I switched to ESPN HD for some World cup hockey and it was 4:3, but looked like the sidebars were ESPN added (they had an grey striped "HD" graphic in them). Then I switched to NBCHD, whith was broadcasting a talkshow. This was also in 4:3, but the sidebars were black, like default ones for the TV.