Psychometric test at interview
I went to do my interview at a large training outfit in the UK 20 years ago or so as a would be commercial instructor. Initial interview was with non-flying HR chap, with a further interview with the CFI afterwards. Correctly surmised the latter interview was the more important. Given a psychometric test to finish the HR interview. Collecting my paper, the HR enquired "did you have any problems answering?", which in the circumstances seemed to invite a flippant reply, so stated "no" whilst giving the most extreme "nervous tick". The HR chap couldn't take a joke and grassed me up to the CFI, who could barely conceal his mirth. Got the job on the spot!
Later discovered that a good sense of humour was most necessary.