These are some good books to read:
The Host by Stephenie Meyer
The earth has been invaded by a species that take over a human's brain, and most of humankind has had one of these 'souls' put inside them.
Wanderer is the soul that has been put inside Meleanie Stryder. The only problem is Meleanie's consciousness refuses to disappear. Wanderer's thoughts are filled with thoughts of Jamie, Meleanie's younger brother and Jared the man she loves. Unable to seperate her desires from Meleanie's, Wanderer sets off to find them.
The Maximum Ride series by James Patterson
It's about six kids who have bird DNA in them and were raised in the school; a lab full of scientists not afraid to do hideous tests on them. Oh yeah, and they have wings.
They escape before the book starts, but are now on the run as the temporary home they occupied has been found by erasers, who are half wolf and half human and want to kill them. Once you pick up the first book you will be unable to put it back down.