What I've never understood is why do commercials in 4:3 have the black bars on top and bottom? Before I got my 16x9 HDTV I always thought they were produced for the widescreen format. But even with my 16x9 TV you still got the black bars when watching in HD. It looks like a picture frame of black bars. It seems pretty pointless to me. Is it just to make it look movieistic?