Initial communications was via email. The HR representatives were quite friendly and prompt. The planning and organization of the interview was quick, simple, and professional. The people were the work quietly type, friendly enough, but not overly outgoing. Most worked at their own cubicles.
Some advice for other interview candidates: be prepared to answer both behavioral and technical questions. I assumed that the first interview would consist only of behavioral questions...and I was wrong. Luckily, I managed to do ok on the technical questions. However, if you are rusty on coding principles...such as object-oriented design principles, I would freshen up on those. Expect to answer coding questions and write a few lines of simple code as well. In addition, you may be asked a few puzzles that force you to think critically. Overall, my interview experience was fairly short (less than an hour), and not too stressful.