“It was fantastic,” Berkeley Repertory Theatre Artistic Director Tony Taccone exclaimed after Tuesday’s Broadway opening of the Green Day musical “American Idiot.” Taccone isn’t an objective observer. “Idiot” had its high-profile world premiere at the Rep last fall, and the company is one of the producers of its third Broadway transfer of the season. Adapted from Green Day’s album by the band’s Billie Joe Armstrong and director Michael Mayer, it’s essentially the same show as seen here, with cast changes in only one principal role and a few chorus and band members. – From SF Gate