I wasn't looking for a job when I was contacted by an amazon recruiter who like my experience on linked in (hadoop in particular), phone call was quick and basically about telling me about position and about my interest in next step. I agree to a phone interview and talked with manager a week later. To my surprise all most all the questions where behavioral, being that I haven't been in the job market in 6 years I didn't realize how common these interviews are now at tech companies. Example of some of the questions where: what would boss say about you, tell me about a risk you took, what would your current boss say about you ,etc. I thought the interview went ok, but my interview skill were a little rusty and I never did hear anything back from Amazon.