On one of our holidays to Dalyan, Turkey, around 1996, we were approached by a BBC employee, and asked if we would return to the taverna we were in the next evening, and be in the background as they filmed for the Holiday programme.
No payment, but meal and drinks would be paid for.
We, and others agreed. The presenter was Monty Don. Everyone was under strict instructions that we wasn't to approach or speak to "Mr Don".
Following filming, the crew and us extras sat at a huge table, had great food, got pissed and had a top night.
Mr Don meanwhile alone at a table in a corner with a book, looking every bit the sad, miserable twat the crew all were saying he is most all the time. :-)