Fascinating in a historical way maybe. But it's stupid and obsolete when people still really believe in those things, the same counts for related affairs such as superstitious, destiny and fate conspiricies. Recently in Holland a guy died because of some 'alternative' medicines some witch lady had given him. She got prosecuted now.
Voodoo dolls in the sims 3 however can provide a lot of fun. 
Exactly, in a historical and cultural way. I had a patient who came into the hospital with garlic strung around her neck. The family (newly arrived immigrants) said she was acting weird, so they put the garlic around her neck. So, I sent off a toxicology blood test and we found she had high levels of opium. Having taken a minor degree in anthropology, I was suspicious of how their cultural beliefs played into their way of life.
I used the cristal ball to scare my children's friends on Halloween. I had my husband answering questions from another room during the seances.
