The first three were predictable but these two were surprising to me:

Mindless Eating: Why We Eat More Than We Think

The opposite of clarity is murkiness. And murkiness’s close cousin is mindlessness—the state of being unaware. Wansink shows you mindlessness allows us to fall prey to hidden persuaders that make us overeat without even knowing it.

Nudge: Improving Decisions About Health, Wealth, and Happiness

Two professors harvest the field of behavioral economics to reveal how altering “choice architecture” can nudge people to make better decisions about their lives.

Mindless eating is one of the best books I've read on the topic of eating.  It resembles freakonomics (in a good way) in that the results are surprising.  Unlike Freakonomics, the advice in there can be immediately leveraged into daily use.

Thanks for the recommendation, Matt. I will look into Mindless Eating.