As with any true Mac geek, I need to keep up with the latest news on Apple and the Mac platform. There are a bunch of sites that cater to these needs, which I visit more often than I would care to admit.
Mac Observer - The former Webintosh, this site features daily news, opinions and commentary on the Mac community.
MacKiDo - Some of the most intriguing and thought-out analyses, opinions and facts about the Mac, competition, interface design, and just about anything computer-related.
MacWeek - I'm most fond of their commentaries and RFI reports.
MacCentral - Good news, commentaries, tips and Forward Migration Kits.
MacWorld - MacWeek + MacCentral in a magazine format (modeled after their magazine).
MacSurfer - Not a news source on their own, but a great compiler of Mac-related news and rumors from around the Web.
MacInTouch - Yet another news/semi-rumor site I visit regularly.
MacNN - Macintosh News Network. Similar types of content to the others, but updated more regularly.
There are many other sites out there that cater to Mac news, but I don't use them regularly, or don't feel they deserve to be on this list :-)