This terrifying but gripping BBC Four series about Northern Ireland’s savage sectarian war reached its conclusion with a meticulously detailed account of how hostilities were eventually brought to a close by the Good Friday Agreement, which came into effect in December 1999.

And welcome back to our favourite French cop show – perhaps our favourite cop show from anywhere, in fact – which has raced into its seventh series (on BBC Four) with some typically grimy storylines about death and lowlife in a very de-romanticised Paris. If you catch a glimpse of landmarks like the Eiffel Tower, it’s only in the far distance across drab expanses of rain-soaked rooftops.

If there was ever a documentary that needed you to have good speakers on your TV setup – or good headphones if you're watching on computer or tablet – this is it. It maybe goes without saying that reggae needs good bass reproduction to appreciate, and in the case of this one the constant pulse of classics and obscurities was absolutely vital to the structure of the piece.

“The Troubles” is a polite euphemism for the ferocious storm of sectarian violence and political chaos which convulsed Northern Ireland for 30 years, before being brought to a close by 1998’s Good Friday Agreement.

Cindy Sherman predicted the selfie, so goes the claim. From our current standpoint, it is all too easy to analyse her many hundreds of photographic self-portraits made since the late 1970s as cultural forebears of the digital medium.

This final episode of BBC Four's Looking for Rembrandt, exploring the life and work of the Netherlands’ greatest painter, was a mini-masterpiece in itself. We rejoined the story in the mid-1650s, when Rembrandt found that his days of popular acclaim and patronage by heads of state and the nobility were behind him.

If you were a fan of “Rock Island Line” when it became a pop hit, you’d have to be at least in your mid-70s now. In 1956, Paul McCartney heard Lonnie Donegan perform it live in Liverpool, and Paul’s rising 77.

Documentaries about the 20th century’s most fabled quartet keep coming.

Ask most people what a showband is and they’ll give you a blank look. But ask any Irish person (or those born in the Irish diaspora) who is north of 50 and they will probably look misty-eyed. For between the late 1950s and 1980s showbands were a huge Irish cultural phenomenon, and Ardal O’Hanlon was our amiable guide through this brief but illuminating history of them.

Picture this. You’re sailing in the Timor Sea with family and friends on your luxurious yacht, hoiking the occasional plump fish out of the ocean to provide a ready meal washed down with Aussie plonk, when you suddenly chance across a decrepit, broken-down fishing boat crammed with mostly Iraqi refugees. What do you do?