Yeah my TV does something strange when I play NES games on the Wii.. Has a weird 2xSal type effect, but only does it 'in motion'. If you stand still (in super mario bros), it goes back to normal pixels; so took me a while to make sure it wasn't just my eyes playing tricks on me. I assume it's not the signal, it's probably some clever motion smoothing algorithm put on afterwards to make low res videos look better? Mine's Samsung too, so we're probably seeing the same thing.. Haven't managed to turn it off (though haven't looked that hard). I *think* it leaves HDMI input alone, so emulators don't get killed in the same fashion.