Many people think celebrities have the greatest lives. They make more money than many people ever see. They live in the lap of luxury and never want for anything. Plus, they often get paid to travel the world and do incredible things. What’s not to love? Well, having strangers camp out on your lawn, break into your house and threaten your life could be a bit of a downer for most people. In some cases, celebrity stalkers turned their creepy obsessions into sinister plots that ended in disaster. Cue the creepy music.