Ewan McGregor at the New York press day for “Beginners.” Ewan McGregor Absolute Beginners by Jay S. Jacobs One of the reasons that Scottish actor Ewan McGregor’s career has been so fascinating is because he is constantly reinventing himself. The guy is just as comfortable in rough-n-tumble violent drug gang stories (Trainspotting) as arty period pieces (Emma, Miss Potter), black comedy (his breakthrough Shallow Grave, I Love You Phillip Morris), action blockbusters (Star Wars