South Park - Season 6 Episode 15
The Biggest Douche in the Universe

When a famous psychic fails to help him exorcise Kenny from his body, Cartman takes other steps to achieve his goal. He and Chef travel to the moors of Scotland, where Chefs mom tries a little of her voodoo magic on him. Meanwhile, after the boys encounter with the TV psychic, Kyle is paralyzed with fear at the thought of members of the spirit world watching over him. Only by debunking those who claim they can communicate with the dead can Stan save Kyle.