Beware the allure of "shaking up the traditional interview process" by delving into the realm of odd, hypothetical and/or irrelevant questions and settings. In my opinion, there is no substitute for thorough, analytical, behavioral interviewing as the basis from which true assessment as to fit for the role is made. And don't forget referencing!
Some companies are now finding ways to shake up the interview format itself, but it isn’t always clear that some of the more out-there approaches are all that effective–or even legal.