Mark Zacher was a professor for almost 40 years in the Political Science Department at UBC, 20 years of which he served as the Director of the Institute, International Relations. During this time, Mark made significant contributions to the scholarship of international affairs, however, it was through interactions with his colleagues and students that he made his most meaningful impact. Mark loved fraternizing with his colleagues and above all mentoring (and fraternizing) with his students. He took no greater pride than in the personal and professional successes of his students and it is a testament that many became amongst his closest friends (and often to their chagrin, co-authors). Following his retirement, many of Mark’s friends, colleagues and former students established and endowed a program – the UBC Mark Zacher Distinguished Speaker Series that invites a top International Relations Scholar to UBC – to honour his contribution to the teaching, understanding and scholarship of international affairs. Mark Zacher died October 25, 2014.