I took an initial personality test/pre-screen, and after that was passed, I was interviewed over the phone by a manager in the Technical Services role. After I passed that, I took another test involving technical comprehension skills. I was then invited up to interview in Madison, where I met with half a dozen people, including a representative from HR. Everyone was very courteous and open to answering questions (with the exception of the dud that joined me for lunch, who was very monosyllabic and uninterested in having a conversation). After the interviews, I took yet another test. I received an offer about three weeks later.
The environment was very college-campus like - the buildings all have different themes, and some employees walk around in slippers and pajama pants, and many bring their families to lunch with them. Each person that I spoke with gave me a progressively larger number regarding hours worked per week - some told me 40+, some told me 45+, and the recruiter eventually hinted at 50+, plus travel. Everyone that interviewed in my group was very "green" - most had never been in the working world before, and they were all very personable and eager, if young.