Ambien = BunVac

"Just a little added lunar power to enhance the mind-waves..."
-Wallace, from Wallace and Grommit: The Curse of the Wererabbit

From the NY Times:

The sleeping pill Ambien seems to unlock a primitive desire to eat in some patients, according to emerging medical case studies that describe how the drug's users sometimes sleepwalk into their kitchens, claw through their refrigerators like animals and consume calories ranging into the thousands.

The next morning, the night eaters remember nothing about their foraging. But they wake up to find telltale clues: mouthfuls of peanut butter, Tostitos in their beds, kitchen counters overflowing with flour, missing food, and even lighted ovens and stoves. Some are so embarrassed, they delay telling anyone, even as they gain weight.