Ballet set to break out as 2011's most exciting art form
After Strictly, a new populism is sweeping dance, with shows at huge venues, scores by the Pet Shop Boys and films all set to appear in the new yearWhen Carlos Acosta and Tamara Rojo run onto the stage of the O2 arena in June next year, the Royal Ballet's greatest stars will be following in the footsteps of Gary Barlow, Roger Federer and, last week, Arcade Fire's Régine Chassagne. Dancing Romeo and Juliet, they will…