In Soulemayne Cisse's BRIGHTNESS (YEELEN--Mali), the father pursuing the
his shaman-son, the hero, and the uncle to which the young man flees turn
out to be twins, played by the same actor.  (Apparently, that was a late
change in production, due to the death of one of Cisse's other actors, but
it's still effective.)
 
--Don Larsson, Mankato State U., MN