Sex scenes rock!
I'm just kidding. I really have never read a book with "graphic" scenes.
I really don't have any pet peeves. I look at writing as an art form, so I respect each authors individual style. There are some that I like more than others, but I respect each authors way of telling a story. I'm not picky when it comes to this stuff. Give me a good plot and paint a decent picture in my mind and I'll walk away from the book happy.