Prominent business leaders include Daniel Lamarre, president and CEO of Cirque du Soleil, Paul Desmarais, chairman of the Power Corporation of Canada, André Desmarais, president and CEO of the Power Corporation of Canada, Calin Rovinescu, president and CEO of Air Canada, and André Ouellet, Postmaster General of Canada, CEO and president of Canada Post. Alex Trebek, host of the game show "Jeopardy!", after whom a building was named on the university campus. Cathleen Crudden, multi-award-winning professor of chemistry. Dafydd Williams, an astronaut for the Canadian Space Agency was also a graduate of the university's medical school.