Future Babble, by Dan Gardner: great essays on how the human mind works and can deceive us, but could have been said in a third of the space.
Scrivener's Moon, by Philip Reeve: The third of the Fever Crumb series and the best so far - Mortal Engines back on form. Of all the Philip Reeve books I've read, including the brilliant Here Lies Arthur, this is the first where the story hasn't flagged in the middle.
The Purpose Driven Church, by Rick Warren. Great management tools and concepts for church growth, that fit with our own concept of the 'Fuzzy Fringe'. Very American and corporate in feel, but some useful tools and ideas that can be transposed into an English rural parish with a bit of imagination and a large shoe horn.