BBC Four HD

Programmes start at 7.00pm.

Two more teams return for their first quarter-final match out of a possible three. Jeremy Paxman asks the questions.

Quiz show in which connections must be made between seemingly random subjects. Three members of the Gay Men's Chorus play a trio of postgraduates.

Sitcom about the upwardly mobile Hyacinth Bucket. Richard worries about the prospect of early retirement as Hyacinth makes plans for his twilight years.

1/6. The Meldrews return from holiday to discover that their home has burnt down. Six months later, they throw a party in their new home.

Examining the 20th century through the lives of Winston Churchill and George Orwell, who both wrote about the Depression, empire, world wars and the Cold War.

Opposition in colonial North America to British policies escalates into violence. But war gives 13 otherwise disunited colonies a common cause.

George Washington takes command of the Continental Army and joins New England's fight to liberate Boston. Congress declares American independence.

Dramatised documentary. An alarming vision of Britain caught in the grip of an environmental and social nightmare. It's summer 2006, and temperatures have topped 100 degrees, with no end in sight.

Quiz show in which connections must be made between seemingly random subjects. Three members of the Gay Men's Chorus play a trio of postgraduates.

In a world exclusive, Professor Alice Roberts follows a decade-long historical quest using cutting-edge research that reveals Stonehenge's oldest secret.

Programmes start at 7.00pm.

Programmes start at 7.00pm.

Two more teams begin their quarter-final campaigns, hoping to secure the first of the two wins they need to progress to the semi-finals. Jeremy Paxman asks the questions.

Quiz show in which connections must be made between seemingly random subjects. Three students play a trio of Hitchhiker's Guide to the Galaxy fans.

Professor Brian Cox questions whether we are alone in the universe. There might be more planets than stars in our galaxy - but will we find a second Earth.

A look at the extraordinary popularity of both Hitler and the Nazis, as well as the astonishing degree of voluntary support ordinary Germans gave the infamous Gestapo.

Actor Ian Richardson walks up the hill to Arthur's Seat, which overlooks the city of Edinburgh, as he did during lunch hours as a bored office clerk 50 years ago.

Producer W Stephen Gilbert looks back on the 1979 TV play Only Connect.

Young academic Graham visits the elderly John to learn more about pioneering socialist and gay rights campaigner Edward Carpenter for his thesis on the early UK Labour movement.

Alison Steadman tells the story of groundbreaking 1974 TV drama Girl. Once thought lost forever, the film later resurfaced, giving Alison the opportunity to share her memories.

Just as she is about to leave the army, Jackie has an encounter with an old lover. Stars Alison Steadman in an early TV role. Contains language which some may find offensive.

The story of how Vienna, triumphant after the Ottoman threat receded at the end of the 17th century, was transformed from a fortress into a great cultural capital.

A look at the extraordinary popularity of both Hitler and the Nazis, as well as the astonishing degree of voluntary support ordinary Germans gave the infamous Gestapo.

Quiz show in which connections must be made between seemingly random subjects. Three students play a trio of Hitchhiker's Guide to the Galaxy fans.

Professor Brian Cox questions whether we are alone in the universe. There might be more planets than stars in our galaxy - but will we find a second Earth.

Programmes start at 7.00pm.

Programmes start at 7.00pm.

The last of the eight quarter-finalists return to play their first of a maximum of three matches in this round. Jeremy Paxman asks the questions.

Quiz show in which connections must be made between seemingly random subjects. Three neuroscientists scrum down against a team of three rugby fans.

Astronaut Tim Peake's video diary of the two years leading up to his arrival at the International Space Station in December 2015.

Classic western. After the latest raid by bandits, the villagers in a small settlement in Mexico band together to hire a group of disparate gunfighters to protect them.

Michael Parkinson in conversation with stage and screen star Yul Brynner. Featuring film clips from The Ten Commandments, The King and I, The Magnificent Seven and Catlow.