I actually obsess about both. I go through periods where I read and watch programs on whatever my current interest is at the time (mummies, Nazis, beginnings of religions, Astronomy, etc.). I also will obsess on art or photography (angels in graveyards, gargoyles, buildings, etc). I even do things like watch the same genre of movies over and over pulling out every single detail until I feel I know the entire thing. I used to be able to read books and watch movies for enjoyment, but it seems as though the classes I took as an undergrad and grad student started my mind looking too closely at the details. Now, I see the details and make all sorts of notes about the associations or mechanics of it, but I lose appreciation for the overall story in the process. That can be annoying.