The Virtuoso Voices section of the Public Broadcasting website has a fascinating interview with José Serebrier by David Srebnik:
This conductor speaks softly and carries a big stick. Conductor Arturo Toscanini was known as the poster child for bad behavior on the podium. Fortunately the days of the yelling, screaming, raging tyrant conductor are mostly over. To get an orchestra to do what he wants, conductor José Serebrier rarely speaks.