Smile, You're On Candid Camera
Originally created and produced by Allen Funt this TV show appeared from 1948 until 2014 with different versions. Over 1000 episodes often featured practical jokes using a hidden camera. The show involved ordinary people, like geocachers!!, being confronted with unusual situations sometimes involving trick props.
Be sure, when you find the cache, to smile nice for your smilie!! Sign the log and keep smiling!!