I was referred by a googler, and then I got contacted some days later by a recruiter.
(important: you can only make it trough a referral. This is important, and it will pop up later on).
The HR was quite messy, and she took 1 month to agree on a date. However, when I talked to her, the interview was very easy and she was very kind to me.
Next step was with an account manager. Now, all questions are purely, purely behavioural on skills related to the job (tell me how you handle client, tell me how you have sold something, etc) and I did not had any google-product related questions, which threw me off a bit. No questions on googleyness. Just STAR questions.
I did not pass to the next round.
A couple of considerations:
1) the referral system screws off a bit, imho. I got the sense that when you are referred, you HAVE to be called and because of this you are staffed on positions which might not suit your profile. Because of the fact that your previous experience does matter, this is a problem which arise later on, and on which you are heavily judged on.
2) Because of the strongly behavioural driven interview, there are no real right or wrong answers - this is complicated that by the fact that Google interviewers look for "something" (googleyness), which is neither explained what it is nor actually explicable (I doubt that Goole can actually define what they are looking for).
3) Feedback is null. Again, in the process there is this heavy sense of vagueness.
4) At the end, you are tested on skills it is not apparently mandatory to have and judged on impalpable traits that are not clear at all.
At the end, I am quite glad I was not hired.
