I read almost anything if it keeps my interest. I tend not to read fantasy or a lot of sci-fi or YA. Although I have read probably ten sci-fi books in my life and have enjoyed them. I just want a good story and/or beautiful prose. But mostly compelling characters. Genre is secondary.
Lately I've been looking for comedy fiction. Have recently read (In comedic fiction) A Dirty Job by Chris Moore, Mermaids In Paradise by L. Millet, Pretty Ugly by Kirker Butler, and Wake up, Sir! by J. Ames. Which were all decent but didn't crack me up.
I have favorite books more than favorite authors (although I've listed a few). I tend to read a book every 1-2 weeks.