I am watching "Fear Factor" right now in HD. The signal is 1080i, but I have black bars on the sides. As you may know in 1080i mode you can not change the aspect. Is this because the broadcast station is sending a 4 x 3 signal? My kids and I watched the Lion King sunday (on ABC I think). It filled the screen, but the spots where the host spoke about the dvd that comes out tuesday and the commercials were not. Also 720p does the same thing. By the way my tv is a Panasonic 53wxd63 RPTV. This may be a silly question, but this is my first HDTV. The picture is stunning. The built in tunner does a great job, I am picking up all my locals on non-amped rabbit ears from about 70 miles away!