RADIO Bunk Bed Radio 4, 11pm

This Is Spinal Tap and

The Simpsons star

Harry Shearer

(right) joins Peter

Curran and Patrick

Marber for more late-night musings in the dark. The conversation concerns startling examples of how live audiences change and shape performances, respect for burrowing animals and the death of manners.

The John Moloney Show (Radio 4, 11.15pm) returns for a fifth run. The stand-up is joined by special guests as he shares his thoughts on neighbours and no-quibble policies at the Stand Comedy Club in Edinburgh.

Free Thinking (Radio 3, 10pm) is a special programme marking tomorrow’s Holocaust Memorial Day.