You're almost certain to be hit with questions pertaining to your strengths and weaknesses. Know your strengths and emphasize those that relate specifically to the position for which you're being considered. If, for example, you're applying for a sales position, you might describe one of your strengths (if it's true) as follows: "I've made a study of personality types and I've learned to quickly type people in terms of the kinds of approaches that might best attract them." Be prepared, in this case, to back up your claim if the interviewer suddenly asks: "What type would you say I am?"