Met 4 people in the morning, 1 over lunch and was invited back to the afternoon session to meet 2 more people. If you get invited back after lunch it means you have done reasonably well. If you do well during your final 2 interviews you will be presented to the hiring committee in a week or two (completely different people than the ones you interviewed with - they just read the feedback). The committee makes the final call and if you pass you then need to find a team in Google to work with as a PM. The people I wet with were all very nice and asked some interesting questions. I have read enough about Google PM interviews to know what to expect. The Engineering guy I met in the afternoon asked me to explain the most difficult technical challenge I faced and how I overcame it. In the end I got the thumbs down for the committee - no reason given which is very frustrating considering I put in weeks of preparation. With Google you can generally apply again after a year, but I move on.... maybe in my next life :-)