I've been listening to The Drunkard's Walk: How Randomness Rules Our Lives[1] by Leonard Mlodinow. It is a great introduction to how probability works, the history of randomness and probability in science, and how randomness affects so much of what we do. very interesting look at the math without getting too caught up in the math.

[1] http://www.amazon.com/gp/product/0307275175/ref=as_li_ss_tl?...