This is the type of question an interviewer asks to see if an applicant will get chatty, and perhaps reveal something deeper about their personality, culture and interests beyond work. You want to avoid revealing too much personal information, especially about things totally irrelevant to the job. When responding, it’s best to mention competitive interests such as team sports or other activities that demonstrate cooperation and collaboration. Stay clear of references to family that could instigate questions of distracting responsibilities such as aging or sick parents, your children and their activities. Creative interests such as photography, painting, woodworking, electronics assembly, automotive restoration or other endeavor that require patience and convey your ability to be imaginative, artistic and resourceful are all worth mentioning because they are valuable characteristics to an employer. Other “safe” interests you can talk about include reading, taking classes (particularly if the subject matter relates to your work), going to the movies, concerts, participatory or spectator sports, reading, travel, etc. Ultimately, you want the employer to know you are a well-rounded individual with more to offer than just specific work experience.