Is the Prime Minister turning into a giddy celebrity hound?

How Stephen Harper ended up hobnobbing with the world’s megastars
Cellist Yo-Yo Ma, left, reacts to a surprised crowed as he follows special guest Prime Minister Stephen Harper onto the stage for his performance of The Beatles song "With a Little Help From My Friends" which he sang and played on the piano during a surprise appearance at the National Arts Centre Gala in Ottawa, Ont., Saturday October 3, 2009. THE CANADIAN PRESS/Sean Kilpatrick