Oh, man … this is pretty cool. http://googlesystem.blogspot.com/2010/12/google-body-browser.html
The link brings you to an explanation of how to get Google’s pre-beta (read: pre even the official mass-testing) version of an interactive map of the human body.
I’ve just started to tool around, and really dig it. You can search—i.e. “femur” or “medial collateral ligament” or “small intestine”—and view what you find in relation to other layers of the body. In 3D to boot!
For all of us bodyworkers out there, I bet this’ll be an awesome tool for client education.