The interview is an interesting process. It is the method by which the company reconciles you to your resume. The fact that they are talking to you at all, says that either your resume is appropriate for the job offered, or you have friends in the company, or both. When an employer interviews you they are actually looking for a 'good feeling' about you. Do they feel like you will fit in? Do they feel like you have the skills necessary? Do they feel like you are a trouble maker? The questions they ask will help them determine these things.
The interview conversation should be thought of like a discussion with the police on TV. The smart person will answer the questions asked and offer nothing more. The open ended question like 'is there anything you want to ask me?' or 'why are you looking for work?' should be answered with something brief and innocuous. The following are things that have been heard in job interviews that shouldn't have been.
If you are looking for work, I hope you find employment soon. I think that we will be swinging back on the jobs front, but not as quickly and likely not the way we were used to before. Quality people are always in demand, so put your best foot forward and go get em!