Demolition Worker Question:

The biggest mistake you can make with this question is to say you don't have any weaknesses. The interviewer is looking to employ a human, not a robot, and we all have our failings so avoid this answer as you risk looking arrogant and ruining your chances.

Use this question as an opportunity to identify something you would like to improve on. Identify a weakness, but then suggest ways in which you can resolve it. Employers are much more likely to respond to an answer like this as it shows that you are willing to invest time into your own professional development and are not complacent.