Plot: Stars and programme-makers come together to look back at landmark series from BBC Two, including the long-running arts series Arena and David Attenborough's natural history masterpiece Life on Earth. The channel became home to hard-hitting and groundbreaking drama including Law & Order, Boys from the Blackstuff, Tinker, Tailor, Soldier, Spy and Empire Road, as well as classic comedies such as Fawlty Towers and Yes, Minister