Those of us who saw the first, 1977 TV adaptation of Alex Haley's Roots in our teens still remember the shock and horror at its handling of a subject about which we knew little, American slavery. We know a lot more now, but the visceral reaction to inhumanity and injustice is no less strong. That's thanks to the high production values of the latest version, its gift for finding the right actors, and the often giddying cinematography of an honourable mainstream parallel to a towering masterpiece among movies, 12 Years a Slave.

A screaming comes across the sky. It has happened before, but there is nothing to compare it to now…

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.

“What if the Germans had won the war?” has been a recurring theme in fiction, from Noel Coward’s Peace in Our Time to Philip K Dick’s The Man in the High Castle and Robert Harris’s Fatherland. There was even a predictive pre-war “future history” version, in the form of Katherine Burdekin’s 1937 novel, Swastika Night.

Tasmania, Down Under is like Canvey Island (although somewhat larger): everyone knows where it is but no one wants to go there. The Kettering Incident reveals why: the bleak but beautiful landscape is blasted by Antarctic gales and the natives, with few exceptions, are ugly devils, resentful of strangers and quarrelsome with their neighbours. And that’s just the humans.

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.

Despite having been a rock star since the late Seventies, Chrissie Hynde seems to be an introverted, elusive sort of person. If this Arena profile was anything to go by, she lives as a virtual recluse, positively revelling in solitariness. Like the film, her last album was called Alone.

From Jimmy Savile to the Rotherham scandal, child sexual abuse has become a recurring nightmare of our society, and thus is inevitably grist to the TV dramatist’s mill.

It takes a certain kind of perversity to make a true-life drama about a missing girl (Shannon Matthews) who wasn’t missing at all – the danger is that drama will be the only thing that’s missing. Neil McKay’s answer to the problem is to take a leaf out of Shane Meadows’s book of tricks and treat the whole sorry affair as a black comedy.

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.