Criley's interactive CD ROM program on cardiac physiology and findings is a masterpiece. The content is solid and enables an inquisitive student (any student of medicine) to learn to relate physical findings with the physiology as represented by phono, ECG, pressure traces and renderings of the physical cardiac cycle. The multimedia presentation far excels that which is available on the WEB and makes for an intriguing learning experience. I have delighted in presenting physiology to students, housestaff, and colleagues through this means. It is a worthwhile investment for any committed medical educator.