Australian actor Jason Clarke is a rare breed—the character actor leading man. He gives a virtuoso performance as Grigory Potemkin, opposite Helen Mirren, in the new HBO mini-series "Catherine The Great." He also stars in "Pet Cemetery," "Dawn of the Planet of The Apes," "Terminator Genysis," "Zero Dark Thirty," and won accolades for his portrayal of Ted Kennedy in "Chappaquiddick." In this half hour he talks about his love of research, his dedication to the text, being there for the other actor, and the uselessness of fame. Plus much more!