I work in a bookstore and read a ton.
I have two sides to my reading tastes:
Fi-Ne Side: I really like poetic novels that I can relate to personally, and that help me make sense of life. An element of fantasy or whimsy isn't necessary, but is often appreciated.
I love those meaty, beautiful classics from Proust, Tolstoy, Dumas, Hugo, but I also like simple, brief stories like hans Christian Andersen's fairy tales. Man's Search For Meaning, Fifth Business, The Little Prince, Siddhartha, and The Last Unicorn. I often make notes in the margins, so I can refer back to something when I inevitably do a post-reading journal entry.
I adore kids picture books too (Oliver Jeffers, Mo Willems, William Joyce, and Robert Munsch are practically my heroes!).
As much as I like fantasy, I can't handle a lot of detail like in LotR, WoT, or GoT--I start to zone out. My eyes also cross, when I'm reading very complicated, technical stuff that has no human element. I can read biology and psychology, but I have a very short attention span for in-depth books on chemistry, math or physics.
My Si-Te side: I get into weird Si-Te ruts, where I compulsively read reference books about subjects I am interested in (I have a weird baseball history fetish), and then organize it into spread sheets and charts. I definitely do that with Personality books too.
John Hodgman's hilarious fake reference books also appeal to my love of almanacs/encyclopedias.