This is asking a lot, but if you have fifteen minutes to spare you should watch this video by Michael Shermer, a contributor to skeptic.com. I saw it a few years ago and revisited it recently after watching a ton of Syfy's Fact or Faked: Paranormal Files episodes with the Mrs.
Watch it here: http://www.youtube.com/watch?v=eUB4j0n2UDU
