Thomas Malory's book Le Morte D'Arthur, which is the definitive account of King Arthur's life, starts off with the story of how King Arthur's father Uther Pendragon desires Igrayne, the wife of the Duke of Cornwall. So Uther invites the Duke and his wife to his castle, but they soon realize Uther's intentions and escape in the middle of the night. This greatly angers Uther, who lies siege to the castle of the Duke of Cornwall. In the course of the ensuing battle the Duke of Cornwall is killed, but then with the help of the wizard Merlin, Uther disguises himself as the Duke of Cornwall and fathers a child with Igrayne. That child is Arthur, who is raised by a knight named Sir Ector but goes onto become the king of England after the death of Uther.
My question is, what TV and movie adaptations of King Arthur depict this story of Uther Pendragon disguising himself as the Duke of Cornwall and fathering a child with Igrayne?