noddie
n.— «Whenever you see an taped interviewer nodding, smiling or reacting with a knowing or quizzical eyebrow, you are generally watching what are called “noddies”—reaction shots filmed after the interview takes place.» —“The BBC. A former insiders view” by Iain Macwhirter Sunday Herald (Glasgow, Scotland) July 22, 2007. (source: Double-Tongued Dictionary)
Further reading
In 1916, a small-town newspaper in Pennsylvania printed a fanciful item about a local gathering with a guest list that included, among others, Miss Ella Vader, Mr. Ray Zor, and other punny names. This is part of a complete episode. Transcript of...
A Havertown, Pennsylvania, listener wonders why her mother used to answer queries about how she was doing with phrase that sounded like either fair to midland or fair to middling. Middling has long meant “just OK” or “right in the middle,” and the...