Of the stars she has worked with, Gayathri Raghuram rates Shriya Saran as the best. "Shriya is very expressive. I enjoyed working with her for the song 'Excuse Me Mr Kanthaswamy...'," says the actress turned choreographer.Having apprenticed under the likes of Prabhu Deva and Raju Sundaram, the daughter of popular dance master Raghuram feels it is easy to become a choreographer these days but