The process took 3 weeks. I interviewed at Gallup in Nov 2011
Interview
Initial communications with company seemed very positive, as the people seemed to be genuine and really interested in intrinsic motivation and personal fit for the company. I enjoyed speaking with the recruiters, who were very down to earth. The interview process, though, was much more unorganized than I thought it would be. Scheduling was a hassle, as few slots seemed to be available every time I called. They were also pretty pushy when your schedule couldn't fit the one opening they have that week, so I'd say be prepared to be flexible.