I have read mostly non-fiction in 2009 and the best were:
Made to Stick see http://www.madetostick.com/thebook/
A neat book with great stories of examples of things that stick and things that do not.
Moyo is an African economist that proposes alternatives to aid. Very credible.
"The Five Dysfunctions of a Team" by Patrick Lencioni see http://en.wikipedia.org/wiki/The_Five_Dysfunctions_of_a_Team
A disarming little story that points things that a critical to people who work in teams.
Boys Adrift see http://www.boysadrift.com/comments.htm
A book that talks about the problems some boys have with our current educational system. A must read for all parents of boy children.
and a fiction book that made quite and impression on me was
The Shack see http://gregboyd.blogspot.com/2008/06/shack-review.html
I found this book quite challenging to my ideas of God. Very inspiring and thought provoking.
I recommend all of these books and would love to hear about other books people really liked in 2009.