As soon as the phone call started, the interviewer asked a puzzle question which had absolutely nothing to do with what I would eventually have to do if I got the offer. Bemused, I promptly solved the puzzle. He went on to ask three more puzzles after that. I solved each one of them. Now, it had already been 20 minutes into the interview and not one relevent question had been asked. I was getting a bit edgy.
He then went on to ask me textbook questions like difference between a process and a thread, types of memory management and so on.
It was one hour into the interview and he hadn't asked meaningful question that could justify the lofty requirements they had mentioned of their desirable candidate in the Job description.
When after around 1 hour, he asked me another puzzle, I politely asked him the relevence of that question with respect to the job. He told me that since he was the one interviewing me, he got to decide what was relevent and what was not.
I told him that I would like to end the interview right there. He protested. I hung up.