They didn't really ask anything out of the orindary, last year. Just read my thread with all my interview questions, you'll be golden.
Enjoy it. I got rejected but it was a beautiful school and neighborhood. At that price? seeing everything shine and glow was a real pleasure. The faculty members I met too were awesome.
Out of my interviews, UNC was the only school that mentioned their students often apply multiple times. They said that repeatedly for whatever reason. Don't let that get under your skin. Go rock it.