On Oprah today the one man that was addicted to crack is in some experimental treatment with a drug that they hope will show promise in reducing the cravings. The doctor on the show showed his brain activity when craving. Almost his whole brain was lit up with red showing activity. It was like his brain was screaming for the drug. They showed his brain during normal stimuli and it showed almost no red. They are trying to find drugs that will target those areas. Marle