Classic Game Room's CGRtrailers presents the "Storybook World" developer diary for SESAME STREET: ONCE UPON A MONSTER. Enjoy!<br /><br />Check out more video game trailers from Classic Game Room's CGRtrailers at http://www.dailymotion.com/CGRtrailers<br /><br />Get more Classic Game Room on Facebook at http://www.facebook.com/ClassicGameRoom
