OS X FAQ (3,379)
Contains a ton of information on how to use X, including a bunch of UNIX-specific help.
OS X Games List (1,384)
A comprehensive list of current and planned releases for the Mac, including a column indicating OS X support. There's some cool stuff on the list, including Links 2002, Sacrifice, and Return to Castle Wolfenstein.
OS X Security (1,651)
A new site dedicated to the topic of security in the age of OS X ... nice layout, and a good start on the content!
OS X Watch (1,172)
A new site focusing on OS X, covering news, products, forums, etc.
OS X Zone (2,438)
An interesting site with a mix of articles, tips, rumors, and general OS X knowledge, culled from many places (including Mac OS X Hints) around the web.
OSX Blog (3,125)
Tip, tricks and articles about OSX.
A collection of articles about apps, the system in general, and editorial, in a nicely formatted and easy to read layout.
For anyone interested in working with audio on OS X.
Webcams and OSX, news and information.
Feel free to add to this source and let others know of your experiences. Includes forums.
Tutorials, reviews, commentary, discussion, and news, all dedicated to OS X. Become an OS X Master!