I just finished the Hunger Games triology by Susanne Collins. I LOVED it. Technically, it's considered a young adult fiction (probably because of the lack of any sex, swearing, or adult topics) and it was good. I would describe it as a mash between Lord of the Flies, Gladiator, and Project Runway (seriously).
Also, some of my all time favorites are:
The Poisonwood Bible - by Barbara Kingslover, a fiction (really gave me insight into a different culture and religion overall)
Water for Elephants - by Sara Gruen, a fiction (a great read about circus life and veterinarians)
Middlesex - by Jeffrey Eugenides, fiction (REALLY made me reconsider what gender is and how maybe male/female roles aren't quite as black and white as I always thought. It's a little slow in parts, but really worth the read)
A Million Little Pieces - by James Frey, an "autobiography" (I guess it's came out a few years after he wrote it that the story is not entirely true, but still a good read. About addiction, rehab and love. It still sticks with me to this day.)
A Child Called It - by Dave Pelzer, an autobiography (A very very traumatizing and horrible account of his abusive childhood. His mother did absolutely horrible and unspeakable things to him. But... as sad as it is, it's inspiring how he grew to be a successful and functioning adult. VERY emotional and inspiring.)
Mmm.. That's all I can think of right now, but I'm sure I'll come up with more.