Seth Rogen is known as a comedy titan with a penchant for smoking pot. Now, he's also an author. His debut book, Yearbook, features a collection of hilarious personal essays about his early life in Canada and his adventures in Los Angeles. The Vancouver-born actor, producer, writer and director spoke with Tom Power about the book, his famous use of cannabis and why he thinks comedy is undervalued. Watch this interview on our YouTube channel (Q on CBC)!