My recruiter called me to have an interview in next week and did not call me back first time. At second time, she said she can arrange an interview in next week, I was so afraid to loose the opportunity and agreed to take it even I did not have enough time to prepare for it. I think google's interview needs intensive preparation.

The interview lasted about a day, with 5 different interviewers. For each section, the technical questions took most of the part. They also showed me their office in Toronto, which was nice