5 speakers, 15 minutes each. No script. The world's leading figures in the arts, science and media give talks about their enduring achievements, wildest moments or deepest passions. It's inspiring, informative, provoking, and above all, entertaining. Based in London but making forays to Sydney, New York and Milan, 5x15 has featured Joanna Lumley, Brian Eno, Jonathan Safran Foer, Jung Chang, Ruby Wax and Alain de Botton. (Podcasts produced by Russell Finch)