Tension is good, mostly. It is the pull that gives meaning to all art, and thus to life itself.Anyone who is never tense about anything ever, has no payoff to look forward to.Even the most easy-going happy movie, will employ various forms of tension-building to make the movie entertaining. Tension can be as blatant as introducing a problem that a character has to solve, or as subtle as giving the viewer the sense of, "Where is this going? What is going to happen next?"A good DJ is a master of managing the tension of the crowds. Have a crescendo too...