Collection of cheat sheets.
Excellent LAMP setup guide.
Security exploits and code.
Getting started with the Facebook API. Some nice example code and links to other tutorials.
RSS to iCal converter. Includes a built in RSS parser.
Usefull tutorial covers most of the basics of reading & writing XML data for use with google maps.
Extended version of the_excerpt() with more customization options.
Mac, Apache, Mysql, PHP