My Friend Haroon Saeed is writing an account of his Telephonic Interviews with Google. He is one of the most intelligent, enthusiastic people whom I personally know. Reading this gives you an idea that what you should should expect when in Interview with Microsoft, Google, Amazon etc. You can access his Blog at http://haroonsaeed.wordpress.com.
One more thing. Many people ask me what to expect in Microsoft Interviews. I have only one answer for all of them and it provides almost every information. Visit Microsoft JobsBlog at http://blogs.msdn.com/jobsblog. Read its archives and Download related videos from Channel 9, and you will know each and everything regarding Microsoft Interviews.