More than 20 years of teamwork, research, and experience in high-risk industries such as aviation, nuclear power, and military operations have clearly demonstrated that teamwork training and checklist usage can overcome the primary causes of adverse events. There is a growing body of evidence that checklist programs have the same error-reducing effect in operating rooms (OR) as in other industries. The benefits include documented improvements in patient safety and quality care; a better office, surgery center, or hospital in which to practice medicine; reduced exposure to malpractice risk; and increased efficiency in the OR.