"I have over 1,100 cornerstones in my collection," boasts Bill McCracken, the world's most adorable real estate litigator and a fella that just really loves the dated stones of New York's buildings. His original mission: find a cornerstone for each year between 1900 and 2000. "I ended up going down every block in Manhattan over the course of two-plus years. I never found a 1997." More about this obsessive, over at Wall Street Journal's video.