I like fiction mystery/thriller books. Probably too much. Anyway, here are few books and authors that I particularly like.
The Road by Cormac McCarthy. They are actually making this a movie and it will be out this summer, I believe. It is dark and difficult (a story about a boy and his dad in a post apocalyptic world) and a great read.
Harlan Coben's books are fabulous as well and 'Tell No One' is one of my all time favorites as well.
David Rosenfelt books. His books are a bit mystery and a bit thriller and a heckuva lot of humor. I love his books because I always end up laughing throughout out.
Lee Child's series on Jack Reacher. Jack is a former military policeman who is out on his own and taking care of the bad guys. Rough and tumble books and always entertaining.
Other writers such as Dennis Lehane (Drink Before the War is one of the most difficult books but finest fiction thriller books that I have read...he also wrote Gone Baby Gone, among others). John Lescroart, David Baldacci, Vince Flynn and Jonathan Kellerman are writers who have many good reads books out among them.
Anyway, if you have other suggestions of other writers that I should look into, let me know.