For Edward Watson they're terrifying and exhilarating. Sarah Lamb struggles to return to reality after performing them. Twenty-five years after Macmillan's death, his visceral works have made a mark on the whole companyKenneth MacMillan holds a peculiarly revered position within the culture of the Royal Ballet. Many junior dancers say that it's the principal roles within his story ballets " Romeo and Juliet, Mayerlin…