On this day in 1948, Allen Funt’s popular television show debuted.
Candid Camera is an American hidden camera/practical joke reality television series created and produced by Allen Funt, which initially began on radio as the Candid Microphone on June 28, 1947. After a series of theatrical film shorts, also titled Candid Microphone, Funt’s concept came to television this date in 1948 and continued into the 1970’s.
The show involved concealing cameras filming ordinary people being confronted with unusual situations, sometimes involving trick props, such as a desk with drawers that pop open when one is closed or a car with a hidden extra gas tank. When the joke was revealed, victims would be told the show’s catchphrase: “Smile, you’re on Candid Camera.” (from Wikipedia)