Both the HDTV and the STB will have stretch modes so you need to double check both of them, since many installers leave them on so customers don't call and complain about black bars.

ENGADGET: How to make sure you are watching the Super Bowl in HD HD

"So I called my son over and asked him to double-check this, and he looks it through and goes, 'Yep, looks like a winner, '" Cereza said.

CNN: SHARE THIS