This news article reports on the documentary To Err Is Human, which was produced and directed by the son of patient safety leader Dr. John M. Eisenberg. The film is structured around patient safety advocate Sue Sheridan's experience with diagnostic errors that resulted in harm for both her son and husband. It features a wide range of experts who discuss the impact of error on all involved, the role of culture in facilitating both mistakes and progress, and why continued work in health care safety is needed.