What does _ _ _ _ mean to you? What does _ _ _ _ mean to us all? Questions asked every day by all kinds of people the world over. These same questions were posed last night at the London Coliseum about the doyen of 20th-century dance and choreography, Vaslav Nijinsky, at one of the Russian Ballet Icons galas that annually pack in an audience mostly made up of the Russian community London has now come to call its own.

Two world premieres in one night is almost more pressure than anyone can bear - choreographers, commissioning company or audience. Still more when the spotlit dancemakers are probably the two top Western names in the art, Alexei Ratmansky and Christopher Wheeldon. Everyone, but everyone, expects masterpieces.

Genius does not mean having no influences. Monotones, one of the very greatest of Frederick Ashton's ballets, is heavily influenced by other works: by George Balanchine’s Theme and Variations and Apollo, by Marius Petipa’s La Bayadère. And it in turn has influenced other great works: Kenneth MacMillan’s searing Gloria would not exist without this unearthly, moon-calm vision.

They should use the whole Yeats line: "A terrible beauty is born". The programme, A Beauty is Born, being terrible, I mean, rather than the Beauty, which is Matthew Bourne's Sleeping Beauty, his latest dance work, which isn't terrible at all, just a mite disappointing. And it strives a great deal higher and with more aim to stimulate than Alan Yentob did in this stock documentary from the BBC's flagship arts strand. Is Yentob the most uninterested specialist presenter on TV?

It's 20 years since the death, backstage at the Royal Opera House, Covent Garden, of a man who scripted high-wire emotions and extreme psychological states in a theatrical language that had widely been held to be the realm of sweetness and majesty. The choreographer Kenneth MacMillan brought the values of modern theatre, cinema and the sexual revolution to ballet, and his narrative daring remains unequalled by any choreographer in Britain after him.

A new Liam Scarlett ballet has become an event, even as, in this case, Scarlett’s home company, the Royal Ballet, is recreating a work he choreographed last January for Miami City Ballet – the young choreographer’s first international commission.

Hans Werner Henze, the composer who died on Saturday aged 86, wrote the music for one of Margot Fonteyn's signature ballets, Ondine, a ballet about an inhuman spirit who longs to be joined to a man - but when she does, he must die. It might almost be a metaphor for the death of the thought the moment it is realised.

The Royal Ballet’s autumn season began on Monday, but this was the eagerly awaited Swan Lake. Natalia Osipova, ex-Bolshoi, now principal with American Ballet Theater and the Mikhailovsky in St Petersburg, was making her debut as a guest with the Royal Ballet, partnered by Carlos Acosta.

For Darcey Bussell it’s Baryshnikov in The Turning Point; for Carlos Acosta it’s The Red Shoes. No one at last week's starry premiere of Love Tomorrow at the Raindance Film Festival, when I asked them for their favourite dance film, mentioned Black Swan. Films about the ballet life are rareties - are the memorable ones those that are realistic about their strenuous world or are they the expressionistic shockers that let rip with the curtains and OTT fantasies?

It's been eight years since San Francisco Ballet were last here, charming us with their finesse and their smiles - welcome back. They offer a boost of spirit to the gloomsters of ballet over here. This small city which punches many times above its weight in the cultural world owes a vast amount of its self-confidence and charisma to its mixed ethnic roots, so the range of dancers from the Far East via North Europe and the Latino Americas is representative.