All’s fair in love and law in I Know Who You Are. BBC Four’s latest Euro-import hails from Spain and, as per the channel’s practice, is coming at you in intense double doses, two 70-minute episodes every Saturday night.

In the midst of a general election campaign and with Euro-shrapnel flying around our ears, it’s an intriguing moment at which to revisit Britain’s history as a nuclear power. Although this film from BBC Science concentrated on the factual and technical aspects of building the British atomic and hydrogen bombs, the story was inescapably entwined with power, politics and national identity.

Mary Magdalene: Art's Scarlet Woman (BBC Four) is, says art critic Waldemar Januszczak, a film about a woman who probably never existed. "So why,” he asks, “are we so obsessed with her?” He delivers the answer in breathy, lugubrious tones as if sharing a dirty secret. The story, he says, is “sweaty, sensuous and naughty... For 2,000 years we’ve been fantasising about this most alluring and intoxicating presence.”

Anyone with even a passing interest in surrealism should watch Philippa Perry finding out How to Be a Surrealist and, in the process, creating an exhilarating and richly informative BBC Four film. In October 1924 the Surrealists opened an office in Paris called the Bureau of Surrealist Research and invited people to drop in to recount their dreams.

Slipped out in the Storyville slot without much fanfare, Life, Animated is the Oscar-nominated documentary which won a theatrical release and rave reviews in the US and UK last year. It’s a horribly clichéd word, but heart-warming is the best way to describe this tale of a young autistic man, Owen Suskind, who learnt to speak via his passion for Disney animations.

Two years ago BBC Four had a film about a year in the life of Scafell Pike. Arriving at glacial pace is the sequel: Life of a Mountain: A Year on Blencathra. The star this time round is more of a best supporting character actor than a headline performer. It’s only the 18th highest of England’s peaks. As one photographer explained, you can’t get a decent shot of all of its five-felled south-facing expanse.

Pigeons were described in this riveting programme as man’s best feathered friends, as well as an urban pest: the 35,000 of them that used to flock round Trafalgar Square deposited some 390 tons of unharvested guano – bird poo, in simpler words – annually that had to be cleaned up, until bird feeding was banned. Mess and noise made the same bird, so loved by pigeon fanciers, into dreaded flying rats, a leading public menace.

"Oh what a beautiful morning! Oh what a beautiful day!" Curly the cowboy sang in the opening scene of Oklahoma!, the first musical from Rodgers and Hammerstein (1943). In the midst of war here was sheer optimism and celebration set – with some nods at reality ("there’s a bright golden haze on the meadow, the corn is as high as an elephant’s eye, an’ it looks like it’s climbin’ clear up the sky") – in the American West.

Ebullient, prolific, loquacious and a charmingly enthusiastic historian both in print and for television, Simon Sebag Montefiore has turned his attention to the pivotal city of Vienna, nourished equally by the Danube and its central geographical position in Europe.

This is a documentary about a minority in a minority, a riff on young, gifted and black. And how better to attract both practitioners and audiences to classical music than by encouraging diversity? The totally startling statistic was that in the UK, only five per cent of classical musicians are black or from ethnic minorities.