Steven Strogatz is a great mathematician and the author of a beloved series in the New York Times about math (he also happens to have been my grad school adviser).
Steve has an amazing book coming out this October called The Joy of X. Expanding on his math series, it explores numerous aspects of math. From the math behind everything from flipping mattresses to popular culture, it is an incredible romp through the world of mathematics.
And he's just released a fun trailer about the book!
http://www.youtube.com/embed/GPttaSg8ySc
As Strogatz says in the video, "math is everywhere, if you know where to look." Enjoy the trailer and go pre-order the book.