In the second programme celebrating the arts highlights from 2014, John Wilson hears from Benedict Cumberbatch, Timothy Spall, Keira Knightley and Eddie Redmayne as they discuss the challenges of playing real life figures in film. Dolly Parton, Joan Baez, Iggy Pop and Emma Thompson talk about the impact of age on their chosen careers as Daria Klimentova explains why she decided to retire from the world of ballet. Michael Sheen discusses his passion for Dylan Thomas in this anniversary year, and Simon Schama and Hilary Spurling enthuse about Rembrandt and Matisse. And pop newcomers, Sam Smith and Young Fathers reflect on their successes over the last year.