Here are some links for Apple Macintosh in general. For OS X specific stuff, go here.
MacSurfer
MacFixit
Macintosh News Network
Macintouch
O'Grady's PowerPage (mainly about laptops)
Mac Resource Page
The Mac Observer
MacCentral (MacWorld)
macslash
MacOs News from Apple
MyMac
ATPM
Tim's Mostly Mac
SecureMac
Low End Mac
Macintosh Resources
Joe Strout: software and information
Resource editing and OS customization
Mac - Windows connectivity
The Quick and Dirty Network for Macs and PCs
Mac-only search engine: Macinstein
MacOS 8.5 Links from MacinTouch
MacOS 8.6 Font Bug and how to fix it.