Camera Mouse
Camera Mouse is a free program that enables you to control the mouse pointer on your computer screen just by moving your head.
To use Camera Mouse you need a Windows 7, Vista, or XP computer and a webcam.
Camera Mouse was developed by researchers at Boston College and Boston University to help people with disabilities use the computer. They write, "We make it available for free download, with no gimmicks or advertisements, because we want to help as many people as possible."