B.J. Novak is an American actor, writer, and comedian best known for his role as Ryan Howard on the television series The Office. He also served as a writer and executive producer for the show, contributing to its unique blend of humor and character development. In addition to his work on The Office, Novak has pursued a successful career in stand-up comedy and has authored several children's books. He has appeared in various films and television shows, showcasing his versatility in the entertainment industry.