The industry term bouncer presents an image of someone who will physically break up fights and forcibly eject undesirable patrons. Bouncers are often portrayed in movies as tough, thug-like scrappers who love to fight, like in the movie "Road House". Many nightclubs foster that image by hiring over-sized, ex-jocks, martial artists, or body-builders to handle drunken or out of control patrons. Are tough guys necessary to prevent violence in a nightclub?