Maureen Lipman and Harry Shearer talk to John in the hours leading up to curtain call of the West End transfer of their critically acclaimed play, Daytona; Caitlin Moran discusses her debut novel and explains why it's the hardest thing she's ever done; American talk show host, comedian, and author Chelsea Handler discusses her stand-up tour, why she's been insulting people all her life, and whether her confessional style is all true; and technology journalist Aleks Krotoski reviews Digital Revolution, a new exhibition at the Barbican Centre which explores the evolution of digital art from the early video games of the 1970s to the visual effects used in the film Gravity.