Ado at NBC over ad for Dixie Chicks film (AP)

AP - The Dixie Chicks are again at the center of a controversy over the limits of opinionated talk. A film company said Friday that NBC wouldn't accept an advertisement for "Shut Up & Sing" a movie about the fuss created by Dixie Chick Natalie Maines' comment that she was ashamed President Bush was a fellow Texan. The network suggested the complaint may be a publicity stunt.