Positively Emerald: Backstage at 'Wicked' with Mary Kate Morrissey

Mary Kate Morrissey is the latest green girl to take up residence at Broadway's Gershwin Theatre. The Wicked star joins a long line of illustrious Elphabas that came before her, including one particular Tony-winning vlogger who gave Broadway.com audiences a peek inside the Emerald City 11 years ago.