1) "Your Money or Your Life" (http://www.amazon.com/Your-Money-Life-Transforming-Relations...) - Don't recall if this was mentioned in any of the recommended book threads, but it's definitely a good one. Gets you thinking about what your job really costs and what your time is worth to you.
2) http://www.mrmoneymustache.com/ - Truly rethink the value proposition of, well, just about everything in your life. Did you know you can afford another $15,900 worth of house for every mile you live closer to work?
I personally ignore most of MMM's frugal lifestyle stuff and focus on the saving 25x your annual spending part.
I highly recommend the book Your Money or Your Life as well. You don't need 250K/yr (unless you are using the surplus to achieve financial independence).
http://www.amazon.com/Your-Money-Life-Transforming-Relations...