Think about how your skill set can benefit each of them. Thrust out your right hand and enthusiastically, while looking them directly in the eyes, shake their hand and introduce yourself with your full name. Say what a pleasure it is to be meeting with them and find your seat. Be sensitive to the fact that many of the professionals you will be meeting with do not interview for a living, but are only assisting human resources in identifying suitable candidates for their departments. Through your preparedness, interest, enthusiasm and generosity, you make the interview process easier and you more likable.
Balance is important.
Ego is always in play when an interview takes place. You want to be liked and they want to be respected. Ask the interviewer to describe the skill set for which they are looking in order to fill the position. This information is critical to the next phase of the interview and will let you know what part of your experience is most important to them and to your getting the job. Stay away from requirements in which you don't have any experience.