In this episode we ask the question, "What is art?"; Karl offers his thoughts on Hirst's oeuvre; Practical considerations regarding art in the home; Karl through the looking glass; Primeval paintings; Gratuitous graffiti; Sculptures in the Square; Karl on political works of art; Karl on film; Outsider art; Whistler's mother-in-law; Music - from Vaughan Williams to Whittaker; Shakespeare's plays on words; Harry the war poet.