Classic sci-fi series. Penetrating the barrier with Leela, the Doctor enters the spaceship and discovers the truth about Xoanon. Show more

Classic sci-fi series. Determined to rectify his earlier mistake, the Doctor tries to repair Xoanon. But the computer refuses his help. Show more

Celebration of Doctor Who's 50th anniversary. A look at the dandyish third Doctor, played by Jon Pertwee, and his regenerated replacement, iconic scarf-wearer Tom Baker. Show more

In the second lecture, Kevin Fong explores life in orbit on board the International Space Station. Tim Peake sends reports about living and working in space. Show more

Using previously unseen performances, a biography of rock balladeer Roy Orbison told through his own voice, casting new light on the triumphs and tragedies that beset his career. Show more

Filmed in Los Angeles, Roy Orbison performs some of his greatest hits with Bruce Springsteen, Elvis Costello, Jackson Browne, k.d. lang, Bonnie Raitt, T Bone Burnett and Tom Waits. Show more

Mark Radcliffe presents a countdown of the ten songs which have earned the most money of all time - ten classic songs each with an extraordinary story behind them. Show more

The BBC opens up its vaults to reveal the forgotten files on the world's most famous secret agent. Featuring rare and candid interviews with all six actors to play 007. Show more

Alice Roberts, George McGavin and a team of experts rebuild our ancient ancestors from the bones up. They reconstruct one of the earliest humans, Homo erectus. Show more

Tom Holland explores how our ancestors sought to explain the remains of dinosaurs and other giant prehistoric creatures, and how bones and fossils have affected human culture. Show more