I don't generally dislike books, but that's because I almost always pick up something only if it really interests me. Even if I do find certain sections of a book not to my liking, I wouldn't say I dislike the book. I read both fiction and non-fiction simultaneously, and I've noticed that I tend to be more disappointed with the latter. Nonetheless, here's a list (if just two items could ever count as a list):
1.
Theories of Personality by Schultz and Schultz - I was expecting more than an exposition of theories derived from the behavioralist perspective. I am not a big fan of behavioral psychology in the first place, so perhaps I shouldn't complain.
2.
The Anthologist by Nicholson Baker - This is one of my favorite books, and I only wish I hadn't read this so I can have the joy of reading it for the first time again.