You guys should really do Heathers. It's been brought up before to do Heathers vs. Mean Girls, but I would advise against that. The two movies are from such different eras, and have such different meanings that I can't see the point of keeping one out.
Heathers is a wonderful, dark, and hilarious movie with an odd message. Plus, Christian Slater and Winona Ryder. It was so ahead of its time too.
That would be incredible. I love Heathers