1. Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks.
2. Crude World: The Violent Twilight of Oil
3. Oil 101
4. Why Your World Is About to Get a Whole Lot Smaller: Oil and the End of Globalization
5. Oil on the Brain
However, I would add one more that has probably had the biggest impact on me personally by changed my eating habits for life. I have become a semi-vegetarian (probably 80% of my meals are now vegetarian, and I cut most sugar out of my diet) after reading this book:
Dr. Neal Barnard's Program for Reversing Diabetes: The Scientifically Proven System for Reversing Diabetes without Drugs
I hope to do a bit better than 13 books in 2010. On the other hand, that may mean that I am spending too much time on airplanes, which is when I find the most time for reading.