Gardasil
($360)
www.gardasil.com
Merck has hit a home run with the first-ever vaccine to prevent cancer. Gardasil protects against human papillomavirus (HPV), a sexually transmitted disease that causes cervical cancer and kills 233,000 women every year. It's a huge scientific breakthrough and figures to be a business success, too. Analysts think it could bring in $2 billion to $4 billion a year.
Best Leaders slide show
Read the story
Reader comments