Classical dancers conventionally have the briefest of all performing careers in the arts, knowing from the very beginning that they'll be lucky to have 20 years of performing at the top of their abilities, after at least 10 years training from childhood onwards. But Dame Margot Fonteyn (1919-1991) was a phenomenon, dancing into her sixties, for reasons that this painful and affectionate programme tactfully explored.

You couldn’t make him up – a big man in every sense, outspoken, spiky, adored, coming from a black working-class family to move from the proverbial nothing to become so much more than something. How to make a documentary tribute without it being sycophantic or a hagiography? By putting the man centre stage. Arise, Sir Lenny, the subject of a BAFTA tribute.

What is light entertainment for? It won’t save the world or heal the sick or bring warring factions to the negotiating table. It’s teeth and smiles and bread and circuses on a Saturday night and it shouldn’t have to bear any greater weight. The Generation Game was never required to offer vital balm during the Three-Day Week. Barrymore didn’t nurse us all through Black Wednesday and Britain’s exit from the ERM.

There has been an abundance of celebrity travelogues of late and with each one comes a new USP. Speaking just of Ireland, train enthusiast Michael Portillo nabbed the Victorian Bradshaw's rail guides, while the adventurous Christine Bleakley explored its wild side; and now Ardal O'Hanlon uses another set of Victorian guidebooks to take us on a three-part journey through his homeland.

Dirk Gently’s shtick as a detective is interconnectedness. Everything happens for an incalculable reason, there’s no such thing as chance, and all neural pathways lead randomly to the correct outcome. It's a philosophy paper gussied up as a whizzbang entertainment. “I will eventually solve the mystery merely by doing whatever,” says Dirk, having introduced himself as a detective.

Anyone who expected a simple robots-versus-humans confrontation, like in Michael Crichton's original Westworld movie from 1973, had another think, or bunch of thinks, coming. The final episode of the Jonathan Nolan/JJ Abrams Westworld was more like a sci-fi manifesto for a post-human world.

Cities, the fastest growing habitats in the history of the world, provided the subject for the sixth and final programme in Planet Earth II, the series that came a decade after the original Planet Earth programmes set new standards for television coverage of wildlife and nature.

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.

Another week, another serial killer on prime time. In Dark Angel we had the grim story of Mary Ann Cotton, the Victorian poisoner who killed her husbands for the insurance. Meanwhile John Christie continues his grim work in Rillington Place. And now In Plain Sight introduces another chilling psychopath going about his business.

In the late 1960s, photographer Nick Hedge travelled the country, documenting some truly horrific housing conditions and the people who were forced to live in them. He photographed entire families living in one room with no heating or access to running water – people who had almost literally nothing. These weren’t isolated people on the fringes of society, these were communities, for many of those involved, this was normal.