I myself love George R.R. Martin's a "Song of Ice and Fire" more commonly known as HBO's "A Game of Thrones" (that is only the book one title, however!)
The series is masterfully handled. So many characters and plots you never want to put the books down.
They even made a game series! From Tell-Tale games, makers of the Game of the Year "The Walking Dead"
So what's your genre of books with a video game counterpart? Who do you like as an author?