Royal women - extra points if they're one of Henry VIII's wives, or Marie Antoinette
Male artists and their women
Edgar Allan Poe
Psychiatry and/or madness
Old New York
Regency/Napoleonic spy novels - extra points if chick lit
Think about it. How many current historical novels fit into one of these categories -- or, even better, more than one?
(Inspired by a Dilbert cartoon from last week that's making the rounds)