I have been only two interviews for a job and they have been a positive experiences. But the most important is to be a succesful with the first interview because it will influence yourself and influence other interviews.
In my first interview I had an argument with my interviewer. I thought he was in the wrong and I told him my opinion. At the end the interviewer thanked my sincerity and my illusion for working and told me that he spoke from his experience.
I remember that was a bad moment but, finally, it was a good experience because I got the work and I felt good after the interview.