Theatre criticism has been in the dock recently after a reviewer was publicly reproached for mentioning an actor's weight. Critics Sarah Crompton and Quentin Letts debate whether reviewers should feel free to assess an actor's body as well as their performance. Olly Alexander from Years and Years discusses the band's new album, Palo Santo, which combines a sci-fi setting with a visceral account of his life as a gay man. And he performs a song from the new release. Veteran American documentary filmmaker Frederick Wiseman delves into the world of the New York Public Library in his 42nd documentary, EX LIBRIS. The honorary Oscar winner tells Stig Abell about film-making at 88 years of age, and why he chooses to do all of the research, shooting and editing himself. Presenter: Stig Abell Producer: Julian May Main Image: Olly Alexander. Credit: Years and Years.