Skills can be taught. Motivations are inherent. Learn how to identify what drives a person to perform well at work so you can get the right person in the door.
The following questions appeared in Mike Michalowicz's book "Clockwork."
I personally think the 4th question will give you the most powerful and telling answer. My answer would involve a beach and writing...but I'm still thinking about it.
1. What are 3 favorite things you've done at work?
2. If you were able to have any job, what would you do?
3. Would do you see yourself doing in 10 years?
4. If you had all the money in the world, what would you spend your time doing?