In almost every interview that has ever taken place in the history of job hunting, three standard questions return time and time again. I am always amazed at how poorly candidates answer these, when it would have been so easy to spend 10 minutes preparing their answers and getting them right, before the big interview.
"What are your strengths?"
As a job hunter, getting this answer right should be at the top of your list. To not be able to articulate your strengths well to a prospective employer, is a bad start to any future employment relationship.
To answer this question well, think about the skills and expertise the employer is seeking for this vacancy. Usually these attributes are captured in detail within the job description. Once you have determined the appropriate "job specific" strengths, assess which you are genuinely skilled at, then talk about these in your answer.
It's important to ensure you can back these up when pressed for further details, so make sure you have good examples of how you used these strengths in the "real world".