Of the books that I read in 2012, here is a short list of those that I found the most helpful, beneficial, and God glorifying.
This was the best modern book that I have ever read on gospel powered sanctification.
As with all of Wilson's writing, I worshiped Jesus through this whole book.
Martyn Lloyd-Jones beautifully address the gospel's implications in even life's greatest difficulties.
Great book on understanding the difference between so called "biblical counseling" (counseling and throwing a few bible verses in here and there) and true counseling from the cross.
Even though some aspects of the baptism of the holy spirit being subsequent to conversion I would disagree with, this is by far the best book on the holy spirit I have ever come across.
This book helps christians to see marriage through the lenses of the gospel, and the gospel through marriage.