As there would be many posts after a while with varying reviews sometime after a recommendation, would a separate sub-category not be better?
There could be a thread for each programme or series and any reviews would be contained within that specific thread.
The Gossip sub-category could be re-named and used for recommendations and reviews.
Having said that, the advantage of a "stickie" is it is always in view but if folk were made aware of the new sub-category, it would get used.