Few actors have been able to convey a sense of gravitas like the tall, dignified Peter Graves. Brother of actor James Arness, Graves was readily remembered as one of the hosts on “Biography” (A&E, 1987-2006), where he solemnly intoned about the lives of public figures for over a decade. Prior to “Biography,” Graves was a film and television star whose heyday came in the late-1960s with the hip Cold War spy drama, “Mission: Impossible” (CBS, 1966-1973). Prior to his days on “M:I,” Graves struggled to make a name for himself by starring in a series of schlock horror films, some of which were