Gretchen Worden oversees one of the strangest and creepiest collections in existence. As director of The Mutter Museum, she presides over preserved, mummified and mounted remains of human oddities. Glass jars line her walls, each containing a freak of nature, a grossly deformed corpse or body parts. Both the collection and Worden's graveside manner are chilling but compelling. Errol Morris giggles nervously in the face of death.