Before Jawbreaker, Clueless, or Mean Girls, there was 1989's Heathers, a dark cult comedy that set the standard for films about popular cliques in high school. Pre-Regina George, there were Heathers Duke, McNamara and Chandler, a trio of scrunchied debutantes who classed up the joint with delicate phrases like "Did you have a brain tumor for breakfast?" and "F"k me gently with a chainsaw."