Inspired by this article I came across:
The Huffington piece there lists some unpredictable characters and leaves off some obvious choices, seems to me. Scarlett O'Hara but no Rhett Butler? The guy from the book Choke? No Mr Rochester??
Edited to add Professor Bhaer from Little Women. Not sexy (except that Gabriel Byrne played him in the most recent movie ) but sooo appealing. And I swear my inspiration was the book, not the movie. I read the book repeatedly when I was a girl, but the movie came out when I was 27.