Yes, especially history and political philosophy. Unfortunately, I keep finding myself with the fiction because it is so much easier. Reading the good stuff is hard to do when you are tired.

Crave non-fiction? I am addicted to it. Writers like Erik Larsen and Sebastian Junger and Ben Macintyre are word for word more entertaining than most fiction writers. (Although A THOUSAND SPLENDID SUNS is one of the most stunning books I've ever read.) Check out IMPERIAL LIFE IN THE EMERALD CITY for an outrageous look at just how badly the diplomacy in Iraq is being handled. (And the book CHARLIE WILSON'S WAR is likewise fantastic.) I also

You just described my non fic reading. Although history, psychology, biology, mythology, and evolution are probably the things i read most about.

In my case, it's a mix of fiction/non-fiction at the 50/50 level. Fiction is the chocolate after a heavy meal, the fine wine sipped while listening to the stars twinkle, tickling my mind with strange tales from subtly different realities. And then there's non-fiction, the millstone honing the mind, trying to get it to go beyond its deeply worn paths to see connections. Mostly scientific explorations or popularizations, à la Douglas Hofstaedter or Jared Diamond; the cynic in me hasn't gotten around to enjoying historical or political non-fiction too much, since although those often represent excellent investigative journalism, I am not really sure which the intended audience is: those who have been following developments, and thus do not need to be convinced of the arguments, or those who will ignore all evidence, even if it is laid out in front of them.

I'm starting to be slightly frustrated in that regard - I'm constantly on the lookout for new areas to be amazed about, but short of reading the professional literature, it's cosmology, physics and neuroscience that get the bulk of the shelf space, and I feel like I've seen most of the authors. Surely other domains must have as fascinating a tale to tell? My recent excursions in reading a few philosophers of science have left me with a grumbling mind, hungry for more substantive nourishment ;)