I have a great deal of fondness for Dean Koontz's "Odd Thomas" series. Some are better than others (Odd Thomas and Brother Odd, okay- steer clear of Forever Odd and Odd Hours), but they're all entertaining in their own way.
"Brave New World" by Aldous Huxley is pretty awesome. It's usually mentioned in the same breath as "1984" and "Fahrenheit 451", so you probably have some idea of what to suspect. It expands upon certain themes in ways those novels never did, though, and I'll always admire it for that.
"The Alexandria Link" by Steve Berry has recently entered starting rotation on my bookshelf. It's apparently part of a series, though I wasn't aware of that when I started reading it. It's a political/religious thriller centering around a set of documents from the lost Library of Alexandria, a first century Egyptian library that was thought to contain all the knowledge of the world at the time- including information from the first draft of the Bible that would fundamentally shift the way religion was perceived if it came to light today.