Lots of info on one page, but still looking good

I am a participant in a debate that has some technical references. Each side is allowed to hand out a single sheet to the audience, printed on both sides. There are no limits on formatting, but obviously people should be able to read it easily. The only limit is one 8.5x11 sheet, and no other. The more info I can fit on the better; I have to be judicious in what I select to print.

What are the best practices for keeping it useful?