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The untold story of John Lennon's 1971 album 'Imagine', exploring the creative collaboration between Lennon and Yoko Ono and featuring interviews and never-before-seen footage.

How has the woman nicknamed the 'Sound Witch' managed to transcend eras and trends, remaining as modern and fascinating as ever? What accounts for her timeless genius? Documentary.

Photographers who captured some of the world's most extraordinary images share the stories behind their craft and careers. (3 of 6)

Photographers who captured some of the world's most extraordinary images share the stories behind their craft and careers. (4 of 6)

Kate Bryan steps into the beguiling world of Eileen Agar, exploring her exhibition entitled Angel of Anarchy at the historic Whitechapel Gallery.

Sissinghurst: Take a tour around the castle gardens created by Vita Sackville-West. One of the best-loved gardens in England, it is designed as a series of rooms. Penelope Keith narrates.

New. Follow dancers Friedemann Vogel, Polina Semionova, William Moore and Gesine Moog on their journey. All offering insights into their dance careers.

Mountain by the Sea: Bob tackles one of his most challenging masterpieces ever as he paints majestic mountains reigning over a colourful seascape. (S9, ep 12)

Mountain Hide-Away: Bob employs a unique technique, using both black and white base coats to create a joyful little stream tumbling down a rocky meadow. (S9, ep 13)

Towering Peaks: Bob delivers yet another masterpiece as he creates a scene of majestic snow-covered mountains, rolling foothills and leafy trees, surrounding a serene lake. (S10, ep 1)

Down Along the Sheltering Palms: An ex-soldier meets a beautiful woman on a nostalgic trip back to his old base. But she isn't all she seems... and the past suddenly comes alive. (S6, ep 6)

A Vorpal Blade: Elderly Teuton Von Baden recalls two men's duel to the death during his student days in Germany. Von Baden was a witness, but he also harbours a shocking secret. (S6, ep 7)

The Faith of Aaron Menefee: A faith healer persuades a garage mechanic - who he apparently cured of an ulcer - to become his chauffeur on his tour. Sidney Blackmer stars. (S7, ep 13)

The Woman Who Wanted to Live: When a woman is forced to drive a murderer to safety, she deliberately passes up chances to escape. Charles Bronson and Lola Albright star. (S7, ep 14)

Barry Levinson: The life and career of Barry Levinson, an Academy Award-winning director, is one of success. Take a look back at his contributions towards the film industry. (S7, ep 9)

An intriguing profile of Tunisian-born Italian film actress Claudia Cardinale, who appeared in some of the most acclaimed European films of the 1960s and 1970s. (S5, ep 10)

The Wrong'un: After closing a deal, a German businessman meets an attractive but mysterious girl in a hotel bar. Despite the staff's warnings, he invites her up to his room... (S6, ep 8)

The Luncheon: Tony eats a pricey meal with the extravagant wife of a filmmaker who wants the rights to his book. However, lunch turns out to be full of surprises. (S6, ep 9)

London - Peregrine Falcon: Jim and Nancy Moir visit London to spot and paint the English capital's high-rise resident - the infamous peregrine falcon. (S2, ep 1)

Great Crime & Punishment Novel Adaptations: Tales of crime grab the attention like little else. After all, who hasn't imagined themselves as a detective from time to time? (S1, ep 3)

Alexander Payne: Explore the life and career of the Academy Award-winning American film director Alexander Payne, a man who possesses his own unique filmmaking style. (S7, ep 10)

Film experts reflect on the life and career of Oscar-winning actor Walter Matthau, who starred in the comedies Fortune Cookie, The Odd Couple and Grumpy Old Men. (S5, ep 11)

The Tribute: Three aristocratic women hear of the death of a woman who once served them as a nanny. They agree to go for lunch in her memory... but a shock is in store for them. (S6, ep 10)

Hit and Run: Dr Roger Ashburn's beautiful wife tells him their marriage is over. Devastated, he begins a new life. Then, a familiar patient is brought into his hospital. (S6, ep 11)

New. HMS Wellington: In the fifth heat, with no pods to protect them, the artists have climbed aboard a WWII warship, HMS Wellington, on the River Thames. (S11, ep 5)

Diane Keaton: A look at the life and career of the late Academy Award-winning actress and star of Annie Hall, The Godfather and Marvin's Room. (S12, ep 3)

This is the life of a Hollywood movie star named Maria, as told by writer-director Harry Dawes, from being discovered in Madrid, Spain, until her funeral in Italy. Crime drama. (1954)

A look at the life of the legendary filmmaker, whose films include the Academy Award-winning The Departed, The Wolf of Wall Street and Gangs of New York. (S5, ep 3)