Google Engineering interview questions

I got called from a recruiter who was working an ex-colleague. It seems that they rely a lot on their employee referrals. There was 2 rounds of phone screens by the recruiter, who asked some basic technical questions. I was actually surprised by how well knowledgeable the recruiter is. Then I was arranged for a full day on site interview with 6 engineers. All reasonable interview questions. Some of them asked me about my experience listed on the resume while others gave standard coding tests. Overall it was a good experience.