Confrontational. It started with the usual background questions and then the hiring manager became almost beligerant and condescending. I felt like he may have been threatened by my knowledge and experience. The technical lead who participated was very nice and friended me on FB afterwards. The recruiter had told me that she had not been able to find a single candidate that the hiring manager liked and she wasn't sure what he was looking for that was eliminating so many candidates. It's probably a good thing since I would not want to work for someone like that.