It's quarter-final night, and with The X Factor still blowing rival show Strictly out of the water in terms of viewing figures, the BBC is bringing out the heavy artillery. Well, they're adding Darcey Bussell to the judging panel, and she's much too refined to fire broadsides at any celebrity dancer who flexed when they should have fleckled. The format gets a tweak, too, with the show being divided into two tonight: a main programme and a results show later, in which legendary diva Bette Midler will perform.
