Check out Managing Leadership on "echolalia." An excerpt:
Every morning over coffee we would have our daily good-natured political debate. He was always very focused, and thus often set the direction and tone of the discussion. I began to notice, though, that later each day the news covering the agenda of the party he supported reported the same points, from the same perspectives, and sometimes even with the same language. He was on the party’s “theme of the day” fax/email list, used to keep everyone on the same page, and the party’s agenda on track.