OK, maybe you can blame it on the fact that I spent lots of spare time browsing my father's medical textbooks as a kid, as well as putting together a "Visible Woman" in homeschool (my mother taught me first through third grade in Africa)--but the Street Anatomy site fascinates me.
Make sure you check out the anatomy tattoos. Not something you see everyday.
Also, the National Library of Medicine held an art contest for children, asking them to portray what they thought the body looked like under the skin. Quite a few beautiful drawings resulted from their answer to that question.