If there are any outside hobbies or interests you have that would be a definite plus in this job, mention them. Remember that the interviewer will be looking for anything that could conflict with your job in any way. Also, you never know what that person's biases are, so be careful when mentioning organizations that have the potential to stereotype you. Avoid answering this question until the end of the interview, if possible. Like any good negotiator, you want to try to make the other party open the bid first.
Many people feel uncomfortable discussing salary or benefits.
Some things are fixed, of course, but intangibles such as an extra week of vacation can often be negotiated if the salary doesn't meet your expectations. Employers don't want to hire someone who is disgruntled one year later because they feel under-compensated. Try to settle on what you feel is fair. The idea is to try for the highest salary you think possible.