Since the Street is in such pain, acing these questions is more important than ever.
That's why we've gone through our files to find questions that stick in people's heads.
These questions get remembered because they tend to trip people up, whether it's because they're hard, they're surprising, or because they're something interviewees forgot to look over before the big day.
So take a minute to think about these. It's worth saving yourself the embarrassment.
Lisa Du also contributed to the reporting of this piece.