With cancer, heart disease, AIDS, hepatitis C and inflammatory devils such as rheumatoid arthritis tormenting the world populace, hardly anybody's losing sleep over insomnia. But most of those afflicted with the condition would pay dearly for a drug that would help them get shut-eye. About 85 million people in the U.S. suffer from sleep disorders, and the pharmaceutical information company IMS Health says the market in this country for prescription sleep products is almost $1 billion annually, and growing at a rate of about 30 percent per year. (BioWorld Financial Watch)