I came through a recruiter (after I was there I found the quality of candidates from this recruiter to be subpar - not sure what that says about me). I was interviewed by a group of people around a conference table, with several of them coming and going throughout the interview. This was pretty much standard after I was on the other side, as well. After getting through this step there may be a more detailed conversation with the actual hiring manager, but not always. The offer will come from HR.