Option 1: Margaret Beckett comparing Tony Blair to Winston Churchill. Does anyone remember their respective ratings in Great Britons? (I can only remember that Blair was even less rated than Diana).
Option 2: A (possibly reconstituted) episode of Absolute Power accusing a government "Director of Communications Strategy" of obtaining a lower second class degree in Geography and Mediæval Norwegian.
I hadn't previously heard Absolute Power on the radio; I was introduced to it by the TV series earlier this year. But I can see that it probably does work better on radio, for the most part.