I applied through an employee referral. The process took 1 day. I interviewed at Princeton University in Feb 2012
Interview
Interviewed by 6 people together, which was less focused but oddly more personal because they got more "off script" than if I'd had been with one person. Felt more casual, but more probing as the process veered off-topic a few times. Everyone seemed to enjoy their jobs and the college atmosphere, which was a good sign.