As far as I know, there are only five countries in the world today that are backward enough, or corrupt enough, to have hereditary leadership (I mean actual, effective leadership, not kings or queens as symbolic figureheads) today:
North Korea (Kim Jong Il, son of Kim Il Sung)
Congo (Joseph Kabila, son of Laurent Kabila)
Syria (Bashar Al-Assad, son of Hafez Al-Assad)
Indonesia (Megawati Sukarnoputri, daughter of Sukarno)
United States (George W Bush, son of George Bush).