Slackware RAID HOWTO - A quick guide to setting up Linux software RAID on modern Slackware versions. Originally written for 12.1, this document also applies to future versions.
A very basic rsync HOWTO - Many people are finding this doc very helpful when it comes to setting up a rsync server. The document goes through the basic configuration, and a quick usage example.
Samsung ML-2010 and Debian - This doc was written by "Magui" on FreeNode IRC. He had a bunch of issues getting his Samsung ML-2010 laser printer going on Debian Sarge (3.1, stable). He's documented the solution here.