My favorite interviewing question is: When was the last time you used your skills/ability outside of a work context to make your life easier?
I feel like it's important to have people who think practically about the kinds of problems they feel like solving and whether they actually make an attempt to solve them. There's nothing wrong with leaving work at the office but we tend to look people who are extremely passionate about technology in general, not just people who use it as a paycheck.
One of my friends always asked "what was the last thing you programmed that wasn't school or job related". He didn't care what is was (e.g. "I wrote and Excel macro for my Dad"), he just wanted any answer to show that they used the skills for themselves.
I feel like it's important to have people who think practically about the kinds of problems they feel like solving and whether they actually make an attempt to solve them. There's nothing wrong with leaving work at the office but we tend to look people who are extremely passionate about technology in general, not just people who use it as a paycheck.