Sam Walters, Britain's longest-serving artistic director of a theatre (43 years!), looks to the past as well as the future with his Orange Tree swansong. This varied festival features nine plays and six world premieres across two programmes, all of them staged by returning graduates of the Richmond venue's trainee director scheme. The diligent Programme One viewer will spot a number of recurring subjects, including science teachers and astrophysicists, the resurfacing in adulthood of childhood dynamics, and constant grappling with faith and mortality.

The French auteur Jean-Pierre Jeunet is best known and loved for his early work: Delicatessen, The City of Lost Children and (conveniently ignoring Alien: Resurrection) Amélie. These films introduced him as a director with a very particular, rather charming vision; they were sublime, sometimes twisted works of partial fantasy which the more recent A Very Long Engagement and Micmacs didn't quite live up to. With his latest, T.S.

At first sight this children's theatre production could seem like a drab story circle for bored bairns. But despite a rocky start, I Believe In Unicorns develops into something rather magical.

After finding her feet, solo performer and fabulist Danyah Miller whisks our attention away from the typical library setting and throws it headlong into an adventure of swimming through oceans, flying kites and climbing mountains.

There are many admirable things about Child Of Light. It's the game that the core team behind Far Cry 3 – the mega-action, gnarly dude first-person shooter ‑ went on to work on next. Yet, it's difficult to imagine two games further from each other.

The teenage heroines of In Bloom may be only 14, but in the world in which they live – the film is set in the Georgian capital Tbilisi in 1992 – they are forced to act much older, to take on responsibilities beyond their ages. The action of the film takes place a year after the break-up of the Soviet Union, and their newly independent nation is afflicted by conflict, both on the wider level – the separatist war in Abkhazia is in the background, while queuing for bread involves exhausting daily squabbles – and on the smaller, domestic front, in which families are fractured.

As she proved in her exquisite debut Love Like Poison, French director Katell Quillévéré has an astonishing knack for delicately told stories which, in their sensitivity to character and credibility, pack a weighty emotional punch. And so it goes in her follow-up Suzanne, an aesthetically sunny story of unconditional familial love and the grand, gut-wrenching folly that comes from being romantically entangled with a dubious character.

Ever since becoming a parent – given that it's my job to look at how music connects to its audience – thoughts about what gets children engaged with it have rarely been far from my mind. It brings home a lot of questions about how much of our reactions to music are learned and how much instinctive, about the functions it serves in our lives, about whether old platitudes about music bringing people together carry any weight and so on. And occasionally it makes me listen with fresh ears too.

The dishonourable parents call each other "fucking headcase" and "asshole" in front of the child rather than "nasty horrid pig" and "your beastly papa", but the essence remains of Henry James’s social comedy with queasy undertones. As transplanted by directors Scott McGehee and David Siegel from late Victorian London to contemporary New York, six-year-old Maisie – she doesn’t age, as she does in the novel, for obvious reasons – is still the shuttlecock rebounding from one careless divorcee’s racket to the other’s.

The first Royal Opera House production to transfer to the West End stage, and Tony Robinson’s first theatre role in 16 years, is a dance-drama version of a children’s book about animals and features a man in a car costume being chased by comedy coppers during the interval. Dumbing down, do I hear you cry? Not a bit of it.

For seasonal fare that’s also profound, few pre-Christmas weekends in London can ever have been richer than this one. Hearts battered by John Adams’ nativity oratorio El Niño last night, one hoped for more soothing medicine this afternoon in the naïve and sentimental music of Berlioz’s sacred trilogy, first performed some 145 years earlier.