Malcolm "Tipping Point" Gladwell has a new book out in January, entitled Blink: The Power Of Thinking Without Thinking, which looks fascinating. In it, he investigates the power of the adaptive unconscious, the cognitive facility behind our ability to make snap decisions or quick judgments. As a huge fan of The Tipping Point I'm highly keen to check it out.
The book is based on his 2002 New Yorker article The Naked Face in which he asks "can you read people's thoughts just by looking at them?" and refers extensively to the work of psychologist Paul Ekman, whose book Emotions Revealed I really should get around to finishing.
Also, Gladwell has written a great article on Ketchup. Yes, ketchup.