Deal or No Deal

Could someone explain this game to me? Suitcases, Howie Mandel, and people yelling at you. I just don't get the appeal. I was totally lost today when we were forced to play the on-line version as part of this conference. The whole crowd was in hysterics, "pick 24! pick 12! No deal!!! NO DEAL!!!" In all the commotion I was both smacked in the face and spashed with coffee. I think I kind of hate Howie Mandel.