I had one phone screen and one phone interview before actually going on site. Both of the phone interviews were quite pleasant and the people on the phone were really easy to talk to. They told me to prepare 3 hours for my onsite interview; However, it ended up being one hour. The first person I spoke to kind of alluded to the fact that they already may have found someone they want to fill the position and that this interview was basically pointless. She said "if this doesn't work out for some reason, we're going to keep your resume on file for future positions, and I really mean that!" I thought that was strange-- it has certainly never happened to me before, and I found it quite off-putting. It definitely made me feel like they were wasting my time. The interviewers were very friendly, though.