Rastafarianism
Rastafarianism believes that Emperor Haile Selassie was not killed by the Derg in Ethiopia's civil war, but will return to save Earth, and in particular, people of African descent. This is a particularly interesting case, as Selassie is identified as the Second Coming of Jesus, so the Rastafarian prophecy is effectively a second coming of the second coming.
Read more about this topic: Messianism