With exclusive interviews from president Obama and his White House team, episode two tells the story of Obama's greatest legacy: healthcare.

Episode three explores how Barack Obama set out to end George Bush's wars in the Middle East and reset relations with the rest of the world. In Cairo he speaks to the Arab world, calling democracy a human right.

The last instalment of this definitive account of Obama's presidency tells how Obama got re-elected for a second term and tried to tackle America's most intractable social problems - guns, immigration and race.

In 1932, the Nazi party obtained more votes than any other, with forty percent of all Germans choosing to vote for Hitler as their leader. Germany was crippled by losing the First World War and as Lawrence Rees' interviews reveal, economic chaos led many to seek a strong and extreme solution to their problems

Granted spe­cial ac­cess to the se­cret work­ings of the Tube, and with the aid of the Lon­don Un­der­ground staff who know it best, en­gi­neer Rob Bell dis­cov­ers the fas­ci­nat­ing hid­den his­tory of how Lon­don’s iconic metro was built.

Granted special access to the secret workings of the Tube, and with the aid of the London Underground staff who know it best, engineer Rob Bell discovers the fascinating hidden history of how London’s iconic metro was built.

Rob Bell unearths the history of the Central Line.

Rob Bell discovers the history of the Metropolitan Line.

How the Piccadilly Line changed transport as we know it.

Explores the fraught but often surprisingly intimate history of Britain\'s relations with Iran, and asks why Iranians think that if something goes wrong in Iran then Britain must have something to do with it.

Militant Islam enjoyed its first modern triumph with the arrival in power of Ayatollah Khomeini in Iran in 1979. In this series of three programmes, key figures tell the inside story.

In part three of this landmark series from Norma Percy and the team that made the multi-award winning documentaries The Death of Yugoslavia and Elusive Peace: Israel and the Arabs, contributors, including Iran's President Khatami, tell the inside story of the West's continuing nuclear confrontation with Iran. The film also shows a rare moment when they worked together.

Following a season in which football has been rocked by allegations of racism, former Premier league defender Clarke Carlisle explores how far his profession has really progressed since the dark days of banana throwing on the terraces in this documentary.

Author and historian Simon Sebag Montefiore presents a three-part series illuminating the history of the sacred and peerlessly beautiful city of Jerusalem.

In episode two, Simon discovers the impact on the holy city of a new faith - Islam. He explores Muhammad\'s relationship with Jerusalem, the construction of one of Islam\'s holiest shrines - the Dome of the Rock - and the crusaders\' attempts to win it back for Christianity.

In episode three, Simon explores how this unique city rose from a crumbling ruin after the crusades to be rebuilt as a world centre of Islamic pilgrimage. He explains how Jerusalem became the object of rivalry between the Christian nations of Europe, the focus of the longing of Jews from all over the world and, ultimately, the site of one of the world\'s most intractable conflicts.

Author and historian Simon Sebag Montefiore presents a three-part series illuminating the history of the sacred and peerlessly beautiful city of Jerusalem.

On both sides of the Atlantic, John F Kennedy continues to be invoked by today\'s politicians in the hope that some of his magic might rub off on them. But, 50 years since Kennedy\'s election, Andrew Marr asks whether JFK\'s legacy has tarnished politics ever since.

The definitive documentary record of one of Jimi Hendrixs most celebrated performances, now digitally remastered and featuring footage never seen on television before. It includes such signature songs as Purple Haze, Voodoo Child and his rendition of the Star Spangled Banner, as well as interviews with Woodstock promoter Michael Lang and Hendrix band members Mitch Mitchell, Billy Cox, Larry Lee and Juma Sultan among others.

Documentary which explores the most important day in the career of the legendary Johnny Cash.

Jonathan Meades takes a quixotic tour of Scotland, a country which has intrigued him since he first encountered lists of towns only known from football coupons

This programme was part of This Is Scotland - a BBC Four season which celebrated and examined aspects of Scottish culture, art, film-making, heritage, landscape and psyche.

On the Isles of Lewis and Harris, Meades discovers Calvinism and peat bog bodies.

Meades celebrates an oil refinery and takes potshots at overpaid footballers.

Jools Holland embarks on a personal journey through the streets, historical landmarks, pubs, music halls and rock 'n' roll venues of London to uncover a history of the city through its songs, the people who wrote them and the Londoners who joined in the chorus.

Professor Brian Cox takes a journey through the BBC science archive to explore the story of mankind's relationship with the moon, from James Burke testing Nasa equipment to Neil Armstrong's first steps on the lunar surface and the dramatic tale of Apollo 13.

On June 4 1976, four young men from ruined, post-industrial Manchester went to see a Sex Pistols show at the Manchester Lesser Free Trade Hall. Inspired by the gig that is now credited with igniting the Manchester music scene, they formed what was to become one of the world's most influential bands, Joy Division.

Documentary about the development of the Boeing 747 jumbo jet. The 747 was a game changer; the airliner that revolutionised mass, cheap air travel. But the first, wide-bodied plane was (originally) intended as a stopgap to Boeing\'s now-abandoned supersonic jet.

A thousand years ago the Khmer people of Cambodia built an empire that stretched a million square kilometers. It became the largest superpower the region has ever seen. Their capital was the great city of Angkor, once the largest city on Earth. Its centerpiece was Angkor Wat - a vast temple complex covering an area more than four times the size of Vatican City

Buried in the Cambodian jungle lie the lost remains of the great medieval city of Angkor, once the capital of one of the world\\\'s greatest civilisations. Today, only the great stone temples like Angkor Wat survive. But Angkor was once a teeming metropolis, full of life - the biggest city on Earth.