I was recruited through the University Hiring Event. This is where college students recruited from their campus go (or at least it was when I went through). Over two days they put us up in a hotel, sent us to information sessions, tours, social events and dinners. Recruiters made an active effort to know each candidates name, and to try and remember details about them. You got the impression that you were always being watched for any red flags. They openly told us that the main point of the interviews was to see if your personality was a "fit," and whether you would "get along" with the culture. Interviews themselves were about 1/2 an hour to an hour, usually a panel of a few people. They didn't seem intent on proving that you had the technical know-how for the job, just that you had the personal character that would help you succeed. There may have been a few technical questions peppered in, but the bulk of the interview was behavioral, and focused on character. Before interviews you are advised of this fact, but there really isn't any way to prepare for it. The interview is long enough for them to ask sufficient follow-up questions so that short "canned" answers won't hold water. If you're qualified and have character, it will be a snap. If you're reading books on how to answer interview questions, or if you otherwise lack self awareness, then enjoy the free food, but keep putting resumes out.