Former Chairman and Chief Executive of the multinational media conglomerate Vivendi SA (formerly Vivendi Universal), Jean-Marie Messier(R) walks into the US Courthouse in Manhattan on October 5, 2009 with an unidentified man. Vivendi Universal and its former CEO Jean-Marie Messier go on trial today in New York, facing what could be billions of dollars in compensation to their shareholders for having embellished the group's accounts until 2002.