Before the initial interview, I was given a pre-screen questionnaire to fill out. After sending that back to the recruiter, I got a call for an in-person interview.
Overall the interviewers were very professional and cordial. Interview questions included a little background about what I currently do (to see how well of a fit i would be in the open position) -- work experience and projects. Group/panel interview questions were more behavioral type questions : "what would you do in this situation..." / "how would you feel if this happened.." "what can kind of contribution can you bring with you if you were hired..."
The wait in between interviews were long --- at least 2 weeks in between interviews.
Hiring manager was apologetic about the slow process. In the end upper management decided not to hire externally and I got an email from the hiring manager explaining to me what had happened. Could have gotten the job, unfortunately they decided not to hire at this time. The hiring manager was nice enough to write the letter himself and volunteered to keep my resume in case any jobs opened up.