Check out what surgeons removed from a woman's stomach in Holland! 75 pieces of silverware!She said it just looked much more appetizing than the food on the plate...fortunately she is expected to make a full recovery and she is in treatment for her affinity for metal.
There is actually a disease where the aflicted can't fully tell the difference between inedible objects and edible objects. I'm not sure what it was called, but I heard about it on the TV show "1000 ways to die" a week ago. The guy on the show ate coins and died from the weight of them.