Dance review: Sylvie Guillem, Sadler's Wells, London
Some stars become famous far beyond their own fields. You don't need to be interested in running to know about Usain Bolt; you don't need to be interested in dance to have heard of French ballerina Sylvie Guillem. In both cases, the fame comes from something beyond their undoubted technical skill. It's about charisma, the personality that shines through the technique.