That's news to me about Napoleon and Mozart...very interesting--thanks for that information, Dot (and no, I'm not being facetious here).
Add James Joyce to the list of famous people with unusual tastes...his letters to his wife Nora have references to his enjoyment of her stained knickers, as well as his savoring of her flatulence. The Marquis de Sade's works are brimming with scenarios involving coprophagy, though I don't know if he indulged in this activity in his actual life. I suspect these kinds of tastes are more common, both in history and in present society, than most people realize...people just don't discuss them widely because of the deep-seated taboos associated with them.
(Sorry, Scott, just had to add on a bit here...)