There are three stages to the interview process.

First, after applying, they will email you to set up a phone conversation. This is not an interview; it's more to acquaint you with the process and tell you what will happen. At the end of this conversation, they will schedule the first technical interview, which will be over the phone.

The first technical interview is roughly a 40-minute phone call. They asked me very briefly about my resume, then launched into questions. There were three questions: one general, "think on your feet" kind of question, and two specific programming questions.

They don't expect you to answer them point-blank. The questions are as much about seeing if you can work with them to get the right answer as they are about getting the right answer. That being said, from what I'm told, 90% of people do not pass this stage.

After this interview, I received a phone call the next day telling me I made it to the next stage: the on-site interview. The on-site interview is actually four separate interviews, separated by a one-hour lunch on Google campus. Supposedly, this is the last stage. I haven't actually done it yet, but hopefully, I'll get the job.