#8 Sandra Bullock
Sandra Bullock is a popular American actress and producer. She is considered as one of the biggest actresses of modern Hollywood. Like her husband Jesse James, Sandra is also reported checking into Sierra Tucson Rehabilitation Centre in order to research her role as an alcoholic addict in the film “28 Days”, almost ten years ago. In the movie, she played the role of a journalist, who is strongly addicted to alcohol. She spent a week at the rehab and mentioned that it was the most honest and revealing moments of her life.