Planet Simpson How a cartoon Masterpiece Documented an Era and Defined a Generation by Chris Turner.
I'm a big Simpsons fan, but I think the subtitle might be a bit of a stretch. Actually, I haven't been reading it straight through. I keep it next to the bed and read random bits of it until I feel like going to sleep. A lot of interesting factoids, and some of his observations are dead on, but a lot of it can definately be skipped. Essentially, this is a bathroom book that'd last a good year or so.
Prime Obsession Bernhard Rieman and the Greatest Unsolved Problem in Mathematics by John Derbyshire.
I don't know why, but the title caught my eye in the book store, and it seemed like an interesting read. It covers Rieman's hypothesis on prime numbers and how things have developed over time.The chapters alternate, first he talks about the history and people involved, then he goes into the math. Actually all the chapters have some math in them, it'd be hard to get into the subject much without it. I sort of feel like I'm reading a mystery novel where I know the last page is going to say "but we don't know who did it.."