Dave Collins, Founder and CEO of Oak and Reeds, was interviewed in Fast Company on ways to integrate improv into a company's interview process. Below is an excerpt of his thoughts (you can read the full interview here):
Brainstorm the questions you need to ask to get the information you need about the candidate beforehand. Have those ready, but also be prepared to go off-script if the opportunity arises. Collins uses a "question-asking funnel," where the interview starts with very broad questions, then more specific, probing questions are used as various lines of discussion develop. The key is to keep the conversation fluid, listen intently, and to be ready to follow an interesting thread when it emerges, he says.
"What I like to teach in improv is called ‘color and advance,’" he says. Use an open-ended question to get the color that the person will share in the story, then use an "advance" question to drill down into the specific skills about which you need to know.