I applied through an employee referral. The process took 6 weeks. I interviewed at Samsung Research America (San Jose, CA) in Feb 2014
Interview
Interview loop with 4-5 employees from the team or related teams. Lasted about 5-6 hours. It was long but the people interviewing were personable. I did not get the feeling that I was being given trick questions. The discussions were very open and frank (mainly because I came in feeling like I was interviewing them as they were interviewing me)