How do you decide which books to read?

John Piper was asked this question recently and here is his response:

  1. Things that relate to the passions of your life
  2. Recommendations from people that are responsible and that you respect
  3. Time-proven, classic, deep works on various issues

Currently I'm reading (and re-reading) the following books:

Total Church and Fusion are two books I'm reading with others (fellow pastors and friends).  I highly recommend Total Church for a paradigm-shifting discussion on gospel and community in the local church.  And I highly recommend Fusion for those who are looking for a practical resource on assimilation. 

What have you been reading lately?  Any book recommendations?