There seems to be a whole range of people looking for interview help, ranging from very basic things, to more complex questions. These were helpful to me for the most basic interview/application things. For the more clinical questions that are asked, I think experience, plus digging through the forums are pretty helpful. But sometimes you never know what to expect them to throw at you...
You're Hired! A Nurse's Guide to Success in Today's Job Market
by Brenda Brozek et al.
A little pricey for a new grad and no cheaper digital/kindle copy, may be a bit dated by now, but worth it if you're entering the market fresh.
Get Hired Every Time: Job Interview Tips for the New or Seasoned Nurse: A quick guide to nursing job interview success!
by Cybil Vein
Digital/kindle only so it's cheap $. Quick and easy read, loaded with general information regarding the nurse interview, but doesn't delve into specific questions for specialized units (like i see posted on the boards). Very helpful for getting the interview right the first time.
Becoming Nursey: From Code Blues to Code Browns, How to Care for Your Patients and Yourself
by Kati Kleber BSN RN
Paperback plus kindle version. This is just an honorable mention for newer nurses. I was semi forced to read this, but it did have some helpful points once you're in.