This page has a list of various books that I find interesting.
Bad Astronomy: Misconceptions and Misuses Revealed, from Astrology to the Moon Landing "Hoax"
by Philip C. Plait
Provides an overview of some common misconceptions about astronomy. Though some parts are rather obvious, e.g., the vernal equinox is irrelevant to balancing an egg and the Coriolis effect does not apply to flushing toilets, I thought the book was interesting. There is a bad astronomy website that has information from the book as well as other more current information related to astronomy. More information.
Bad Medicine: Misconceptions and Misuses Revealed, from Distance Healing to Vitamin O
by Chris Wanjek
Provides a brief overview of common misconceptions about medicine. In particular it discusses ridiculous "alternative" treatments such as homeopathy, i.e., like—diluted to negligible levels with water—cures like. There is also a discussion of the history of medicine. More information.
Don't Know Much About the Bible: Everything You Need to Know About the Good Book but Never Learned
by Kenneth C. Davis
An interesting question and answer style overview of the Bible. Most of the questions are answered by giving a summary of the biblical account or biblical quotations supplemented with information from other sources. In particular, a lot of time is spent examining who wrote the books of the Bible and the circumstances that may have influenced these authors. Though no definitive answer is given, it does summarize the positions of scholars and their reasons. Furthermore, the book highlights the history of important translations and versions of the Bible. More information.
How to Prove It: A Structured Approach
by Daniel J. Velleman
Covers the basics for reading and writing mathematical proofs. This book is particularly useful because it shows the messy details that go into creating the succinct proofs that are usually shown in text books and research papers. More information.
Instant Physics: From Aristotle to Einstein, and Beyond
by Tony Rothman
A laymans overview of physics. Provides a quick summary of the major theories and how they came about. More Information.