Addendum for new grads interviewing at Microsoft: when you go to the welcome center on the morning of your interview, the H1-B filings for all recently hired foreign employees are posted near the candidate waiting area. These have salaries.

These are especially helpful for answering that eternal first HR question about salary expectations. The best answer is to dodge the question entirely, but if you're not good at negotiating with skilled recruiters (and if you're a new CS grad, you probably aren't) pick a number that's somewhere in the middle of the posted H1-B range.