Montezuma is a 2009 BBC Television documentary film in which Dan Snow examines the reign of the Aztec Emperor Moctezuma II. Montezuma is a 2009 BBC Television documentary film in which Dan Snow examines the reign of the Aztec Emperor Moctezuma II. Montezuma is a 2009 BBC Television documentary film in which Dan Snow examines the reign of the Aztec Emperor Moctezuma II. Montezuma is a 2009 BBC Television documentary film in which Dan Snow examines the reign of the Aztec Emperor Moctezuma II.