BBC quiz programme that's been going since 1972. Four contestants are each given two minutes in turn to answer questions on a specialist subject of their choice, then 90 seconds of general knowledge questions. Highest score wins. The inquisition occurs on a single spot-lit black chair in a darkened auditorium, the question master is always a no-nonsense schoolmaster type, and the theme music is a classical piece call "Approaching Menace" ( https://www.youtube.com/watch?v=EOa9Zl-nYVI ).  The whole format is a throw-back to a sterner, more austere Britain. Time was you'd have ordinary people with truly hardcore specialist subjects: "Hydrography of the African Rift Valley", "French Poets of the Ancien Regime", and suchlike. Nowadays, you can have Harry Potter as your specialist subject.