Be professional and focused, yet friendly and personable. Remember, you need to fit into the workplace. No one wants to hire an individual with no personality, no matter the qualifications. Be brief, but thorough in your communication style. Long-winded, endless responses to questions are not the answer.
People love to hire individuals excited about their company.
Be professional, yet demonstrate your interest and energy. In each and every interview situation, there are common questions that will be asked. Don't wait until the interview to decide your response. Be prepared and think through your answers before you arrive. Remember, listening, confidence and quality of presentation are the keys to successful interviewing.