No decent company should allow a single interviewer to shut down a candidate. I am a regular interviewer (phone and in-person) and I've got a few pet problems

No decent company should allow a single interviewer to shut down a candidate. I am a regular interviewer (phone and in-person) and I've got a few pet problems that I throw at all candidates who pass the simple introduction. I would never can someone on and 1 type of question, but I think it's fair to say that missing 2 or more conceptual questions will pretty much end the interview for me. That's why we have at least 2 2-person teams interview in-house -- if they passed the phone screen and make it in our doors they deserve it.