I know many people have said this, but it wants repeating: Zak is awesome. He comes up with some of the best random tables for rushed DMs the blogosphere has ever seen. So, to do him an honour, I have taken two of his recent tables and turned them into printer-friendly one-page charts.
Also in the category of “Awesome One-Page Things that you HAVE to put in your binder NOW” is Telecanter’s series: Potions, Drugs and Rings. Along with this stuff, and random tables from everywhere, my 40-page clear folder is now almost full (I have so little room for the awesomeness-to-come! *sigh*).