I applied through an employee referral. I interviewed at Google in Apr 2011
Interview
Was referred by an employee and obtained two 15 minute phone interviews. The interview questions were standard however the interviewer professionalism was extremely low. The first interviewer did not call at the scheduled time... period. The interview was rescheduled and the second interviewer also did not call, after waiting 30 minutes I called them and was told "he had gotten busy with something". The interview was then conducted.
Interview questions [1]
Question 1
Typical low level CS questions about sorting algorithms and operational cost.
I applied through college or university. The process took 1 day. I interviewed at Google
Interview
Got asked for an on-campus interview with 2 interviewers, 45 minutes each. Both asked me questions on binary trees, while splitting their questions to part, a, b, etc., with each additional part asking the likes of "well, now assuming ______ no longer work/can't be used, how would you do it?". Interviewers were nice.
Interview questions [1]
Question 1
The concepts aren't hard, but requires thinking and has twists on the questions that you might have seen from interview books and such.