I recently picked up the Toshiba 643 20" (the only 20" with a 16:9 mode as far as I know) for the bedroom. The picture is decent, but straight lines are VERY blocky. To the point of distraction. This happens with S-Video and Component wires. I turned down (off) the Sharpness, but that didn't do any good either. Does anyone know what's going on here? Is it a comb filter or something? I don't expect a 20" TV to be phenominal, but it's not even tolerable. ANY help would be appreciated. Thanks.