One of the standard library interview questions is about Reader's Advisory, or recommending books. My answer is that one starts by asking what the patron has read lately that she liked, and what it was about the book that she liked; and then recommend other books along that line. (Standard protocol.)
The interviewers agree but still want a recommendation, and in part because it is my second favorite book in the world (Zorba the Greek is my #1 favorite), and in part because I become forgetful in job interviews, I always end up recommending To Kill A Mockingbird.
I had a job interview recently and made mental notes about several books to recommend, and then forgot them during the interview. Fell back on To Kill A Mockingbird.
Imagine how hard I laughed when I saw this headline in the August 18 issue of the satirical newspaper The Onion: "Lazy Barnes & Noble Employee Recommends To Kill a Mockingbird."