I was contacted by a recruiter after submitting my resume at a campus event. First there was a phone screen by an HR person going through some semi-technical and trivia questions compiled by somebody else. These pretty easy and the interviewer probably just tries to determine whether your answer comes close to what is listed on their sheet. Then I had a second phone interview with a more technical person. Again there were some light trivia questions of the sorts other posters have listed already and a coding question. The third one was over skype and consisted of two back to back interviewers with engineers. One of them had trouble remembering one of his coding questions, so afterwards I found out he hadn't formulated it quite right. This was a bit confusing to me on the spot and might have contributed to less than stellar performance.