"Crackerjack" was a British children's television series that aired on the BBC Television Service from 14 September 1955 until 21 December 1984.
The shows were filmed in front of an audience largely of children, at the BBC Television Theatre & the format of the programme included competitive games for teams of children, a music spot, a comedy double act, and a finale in which the cast performs a short comic play,
The show was introduced with the phrase "It's Friday, it's five o'clock. . . It's Crackerjack!"