I applied in-person. The process took 4 weeks. I interviewed at Merck (West Point, PA) in Apr 2013
Interview
Initial process was a direct manager then second round was a team format which was a little intimidating. They were all very polite and the questions were mostly softball technical ones. The one lead was the "bad cop" of the process, but not really.
Very pleasant interview with I think the manager of the department. Kind of unique format, we talked about random things I assume to get an idea of the type of person I am and then some case study questions which were pretty straight forward. Overall a decent experience.