People showing up to interviews drunk or high, clear untreated mental health problems, etc.
One guy showed up hung over after walking a few miles to the interview after he wrecked his car the night before while out binge drinking and drunk driving.
I had one large guy block the exit from the interview room and demand that we hire him to do GPU programming, even though he clearly knew nothing about the subject. We said "sure" and then once he got out of the way had security come and remove him.
You really never know what you'll encounter when you call people in for a chat.
Similar experience - interviewing for a DBA position, one candidate couldn't answer the most basic questions, started getting angry and not at himself. The interview is clearly a waste of time so soon I'm saying "thank you for your time today" and he starts shouting how he is a good DBA, just ask his friend Mike, call him right now. I reach for the phone, but not to call his friend Mike. He left before security could get there.
Wow. Can you elaborate on the mental health cases? Are we talking about mood disorders like depression or detachment from reality like schizophrenia or something else?
I probably can't diagnose correctly, but the ones I dealt with personally reminded me very strongly of some schizophrenic family members I have when they've stopped taking their medication.
One guy had to ask to leave the interview multiple times to go wash his hands.
