Jason Reitman (born October 19, 1977) is a Canadian-American film director, screenwriter, and producer, best known for directing the films Thank You for Smoking (2005), Juno (2007), Up in the Air (2009), and Young Adult (2011). As of February 2, 2010, he has received one Grammy award and four Academy Award nominations, two of which are for Best Director. Reitman is a dual citizen of Canada and the United States. He is the son of director Ivan Reitman.