Quirkology: How We Discover the Big Truths in Small Things by Richard Wiseman.
"This is a viral book - once you read it you just have to tell other people about the remarkable findings that Wiseman reveals. With this book there is little doubt that Wiseman is the most interesting and innovative experimental psychologist in the world today."
-- Michael Shermer.
I have a sample in my Kindle, and it looks interesting.
The Quirkology website is located at
http://www.quirkology.com/USA/index.shtml.