Have you ever wondered how Harold Camping and his followers figure out the date for the end of the world? One of Camping's closest followers provides this link: Numbers in the Bible. I know, that's not that impressive. Here's what is: they also have developed a computer program to do their Bible math:
Bible Calculator: The Bible Calculator is a computer tool for researching numbers and time intervals found in God's Word, the Bible
Bible Calculator (Java)
I wonder if any of the people who developed this program had anything to do with Windows Vista.