The McGill University virtual stethoscope
A very well-done site, that combines a virtual on-line stethoscope with impressive visuals.

Atlas of heart murmurs
From the University of Kansas Medical Center

Atlas of echocardiograms
From the University of Kansas Medical Center

Atlas of electrocardiograms
From the University of Kansas Medical Center

Cardiac angiography
MPEG movies from the Cardiovascular Research Institute of Southern California

Live beating heart surgery
Replay the first "Beating Heart" operation to be webcast live. Not for the squeamish.

Coronary artery fly-through
From G.E., a number of medical 3-D fly-throughs, includes a good one of coronary arteries

CPR instruction from the Mayo Clinic
Includes a movie you can download

How to transplant a heart
in 19 easy steps. You perform the surgery yourself. From NOVA online.