This seems like an odd question, and it is, but an employer or recruiter might ask this to learn more about your personal interests, and cultural/sociological awareness. Your answer might reveal something about your knowledge of pop culture, current events, media and celebrities. Any film title you mention – new or old – should suffice. It doesn’t matter whether the picture was streamed, rented, downloaded, watched on commercial, cable or satellite television, or seen at the theater. Your answer will convey that you have interests outside of work, and that you can get away from your daily routine. Depending on the position you are applying for, your knowing about film and other cultural events may reveal how well you’ll relate to certain job functions, the people you could be working with or the customers and clientele with whom you’ll do business. Try to avoid critiquing the film you mention, as this could – should your opinions differ greatly from your interviewer – subject you to creating impressions unhelpful to gaining employment!