Nearly four years after the fatal shooting of his wife, Bonnie Lee Bakley, Robert Blake's murder trial is finally about to begin. The 12 jurors (and six alternates) who'll decide the 71-year-old Baretta actor's fate were chosen and sworn in on Wednesday at Los Angeles Superior Court. And most of 'em are really kickin' themselves right around now for not cooking up better excuses to get out of jury duty.