Contacted by university recruiter for a phone screen. They provided a helpful prep resource and the questions in the interview were straightforward. I was flown out to the Menlo Park campus for University day, where I had 4 interviews and then QA sessions and a campus tour. Most interviews were standard except one negative experience where I asked about the result of a test case and the interviewer kept changing his answer. It seems that even one poor interview will hurt your chances.