Lively post-show talkbacks with cast, crew, and creative team members are a staple at regional theaters and Off-Broadway theaters, but they're less common at Broadway shows. And they're pretty much unheard of for long-running Broadway musicals. But the Tony-winning Chicago is bucking the trend by introducing "Talkback Tuesdays," a Q&A session to be held once a month following a designated performance. The first talkback at the Ambassador Theatre will be with Chicago's director, Walter Bobbie, following the September 23 performance of the show.