Another commercial that was edited was the AT&T collect calling spot with Carrot Top as a mounted police officer. Originally the WTC was prominently visible in the background of the shots of Carrot Top, but now that camera angle is cropped close around CT and the horse. You can tell they did something because those shots have a grainy look to them while the rest of the commercial is clear.
I thought they could just use digital effects to erase the offending material from this commercial, but Carrot Top is still there.