Which of all your jobs have you found the most interesting, and why?

It is easy to hear a question like this and yet forget to answer the second part of the question. You need not only to have the most interesting of your jobs to talk about but also be ready to explain clearly exactly what was so interesting about it. This question may be asked if you have had a varied employment history. A wise answer would include work similar to the job on offer to show that you will be happy and involved in your work. Try to justify your choice by giving examples of your main achievements in the time spent there, or explaining the particularly interesting aspects.