I applied through my university's career web site before 2009, and was contacted for the first round interview.

First round - Two technical interviews with software engineers. We were given a paper test with 5 questions that have been stated close to verbatim in previous reviews (find closest common parent of two nodes, reverse a linked list, count # of bits in a byte, db schema, cache design). The interviews are essentially a review of that paper test, and you may be asked to answer a slightly-modified version on one of the questions.

Final round - Two technical interviews and one HR interview. Both of the interviewers were senior engineers, and they asked different types of programming questions that are more or less on par with the paper test in the first round. The HR interview was very relaxed.

During the process, you eat lunch with other employees (with no connection to the interviewers) and may ask questions. My process was quick; I was contacted the day of the first round interview for the final round invite, and I was contacted a week after the final round with an offer and accepted.

Finding the lowest common parent of two nodes can be tricky.

Detecting a palindrome was asked to nearly every candidate when I was applying.