The Canadian acting legend Saul Rubinek has returned to the stage to explore one of theatre’s most controversial characters: Shylock, the Jewish moneylender in Shakespeare’s comedy “The Merchant of Venice.” Saul stars as a fictionalized version of himself in Canadian Stage’s new production of “Playing Shylock,” which takes a poignant yet comedic look at cancel culture, representation and anti-Semitism. But for Saul, it’s about more than that — it’s about keeping an audience “off balance.” He sits down with Tom Power to talk about the play, and how “Q” actually ended up influencing the production.