Skip Angel, over at Random Thoughts from a CTO, is one of the most passionate business leaders I've had the pleasure to meet. His articles are well-thought out, and actionable.
Read his most recent entry: "Do you have PASSION for your job?"
BOTTOMLINE: "Sometimes passion has always been there, but never triggered. Other times, passion was there but need to be re-ignited. Find it! Use It! Help others do the same! If you find that these things don't renew your passion, then you seriously need to consider finding another organization that will."