Brothers Caleb, Nathan and Jared Followill and their cousin Matthew Followill, better known as Kings of Leon, have come a long, long way from their humble Tennessee roots in the last 12 years. In London last night playing to a 65,000-strong crowd in the same week that a documentary charting their rise hits cinemas, the contrast between the life they were born into and the one they have carved out couldn’t be more marked.

Continuing BBC Four's trend of creating surprisingly watchable programmes out of dowdy and unpromising ideas, this survey of the plants gardeners love to hate was a mine of information and offered plenty of food for thought. And for that matter, plenty of food, since it appears that wheat has only survived to become one of our top crops because, several thousand years ago, it was genetically beefed up by getting spliced to a weed.

The dramatic music, blue-tinged reconstructions and menacing voiceover all suggested that we should be sceptical of World War Two heroine Vera Atkins. The title of the programme indeed, Secret War: The Spymistress and the French Fiasco, told us how we should feel. We know that she was a brave member of the Special Operations Executive, the British department responsible for secret agents in occupied lands, but thankfully this programme came along to debunk her. Or did it?

Bill Morrison’s film, mostly edited together from archive material, serves as an elegy to Britain's recent industrial past. The older footage has been handsomely restored, and often it’s only the clothes that give a sense of period. It focuses on the Durham coalfields, where the last mine closed in the early 1990s. There’s little left to show for it – the film is framed by aerial sequences where we search in vain for any trace of the industry. Collieries have been replaced by retail parks, artificial ski slopes and football stadia.

The argument in Terry Pratchett's BBC Two documentary Choosing to Die boiled down to the sanctity of life versus the quality of life. Pratchett's own reasoning, that he has Alzheimer's disease and would prefer to choose the manner and timing of his own death before he becomes incapable of making that decision, is eminently logical.

A teenage boy howls casually at the full moon; elephants in a river take a midnight dip, glossy with water and moonlight; a drunk on a park bench can’t hold back the laughter as he listens to an iPod. What were you doing on 24 July, 2010? It’s a question that executive producer Ridley Scott and director Kevin MacDonald, with the mighty aid of YouTube, asked people across the globe.

The identity of British independent film, and its future directions, has always been a matter of some contention – and with the ongoing transfer of authority on funding issues from the now-defunct UK Film Council to the British Film Institute, it’s a question that isn’t going to go away. For Ron Peck, whose most recent film Cross-Channel has been released on DVD, coinciding with the re-release of his Empire State, it's a question close to the heart, as director of what has been called Britain’s first openly gay film, Nighthawks, and the much-acclaimed boxing documentary Fighters.

Verbatim theatre has been the flavour of political theatre for the past two decades, and no theatre has done more to promote this style of public witnessing than the Tricycle in Kilburn, north London. Its artistic director, Nicolas Kent, has created a special style of verbatim drama called tribunal theatre, where the results of long-running public inquiries or trials are edited into an evening’s viewing. His latest venture, Tactical Questioning: Scenes from the Baha Mousa Inquiry, which opened last night, illustrates the pros and cons of this type of infotainment.

Notwithstanding legends of earlier generations such as Fangio or Jim Clark, it's Ayrton Senna whose name commands the most mystique in the annals of Formula One motor racing. Nor is his reputation limited merely to so-called "petrolheads". Away from the track, he became a kind of deity in his native Brazil, both for his racing feats and his charitable endeavours now continued by the Instituto Ayrton Senna.