 Physical by Olivia Newton-John. Ten weeks at number one. And there's your answer, Damon. There's a tie among three singles by women for the most weeks at number one. Ten weeks. By Dinah Shore with Buttons and Bows, by Debbie Boone with You Light Up My Life, and by Olivia Newton-John with Physical. Thanks for writing in. Now, on with the countdown. Number 27.