The Tao of Mac - HOWTO/Set Up daapd on Fedora Linux. It's like this bloke is some kind of karmic twin/mentor for me or something - he is a Mac fanatic who also uses Linux, and this is exactly what I want to achieve.

What's in Your Box? - an interesting (although not necessarily frequently updated) blog of links, including The Guide to a Linux iTunes Server.
Looks very much like I can keep a copy of my music library on my Linux server and have it available to every other machine over iTunes rendezvous. More here and at the official daapd page.
Tasty.

Some tasty Linux Wallpaper - note links on the left for categories.

Nagios is an open source network and systems monitoring tool. You'll probably also want some plugins, some mates in the community and also PerfParse to store and analyse the collected data.
This might take me a while to get running.......

Nvu - The Complete Web Authoring System for Linux, Macintosh. Basically, the reincarnation of Mozilla Composer, I think.

Puppy Linux - runs of a bootable multi-session CD so you can save files if you boot offa CDRW drive. Nice.

How To Set Up A Debian Linux WebCam Server Using a USB Web Cam. Another thing I always meant to look into.......