While this is humorous, there are some good tips in better IT security controls for organizations

Halloween: User Tricks and Security Treats
http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9004538

QUOTE: Thirteen malevolent spirits may haunt the halls and cubicles of your company, and if you're going to scare them into security compliance, you may need to get a little bit spooky yourself. Have a few treats up your sleeve to return for these goblins' sinister tricks.