Google Calendar officially comes to Apple's iCalSource: CNET.com
Google on Monday formally announced full support for the CalDAV protocol along with the release of a small piece of software for Mac computers that lets users easily link up their Google Calendars with the iCal application.
Finally! Sync iCal and gCal with freewareSource: Lifehacker
Online and desktop calendar-syncing application Calgoo Connect—along with all of the other calendar tools available from Calgoo—are now free. Calgoo Connect syncs Outlook on Windows or iCal on OS X with popular online calendars, namely Google Calendar and 30 Boxes.
Microformats Plugin for Safari Source: The Unofficial Apple Weblog (TUAW)
If you're into web technologies, one of the words being whispered for a good while now has been Microformats - a fantastic way to place human and machine-readable contact, calendar and other information in webpages.

Ever feel like having a secretary to call sweet cheeks -- err, I mean, take care of your schedule and notes for you? Yeah, well, neither did I. Until I came across I Want Sandy, which aims to allow you to fulfill both of those desires. How well does it work? Let's see.
Road to Mac OS X Leopard: iCal 3.0Source: Apple Insider
Apple has made major changes to iCal in Mac OS X 10.5 Leopard, introducing integration with its own new WebDAV-based iCal Server included in Leopard Server. Here's a comprehensive history of software-based calendar applications and a look at what's new in iCal 3.0.

Many complain that "the world today" is too complex, moves too fast, and doesn't let us stop and appreciate what we have and what is around us.
The Web's Best CalendarsSource: Wired News
Online calendars help you keep your life in order no matter where you are. They hold all of your info securely on a web server. Log in with a password and your schedule accessible from anywhere.
Spanning Sync Beta: Syncing iCal and Google CalendarSource: The Unofficial Apple Weblog (TUAW)
Now in beta is Spanning Sync, a preference pane for the Mac that allows easy syncing between iCal and Google Calendar. Previously, getting the same information across both calendars was painful and not exactly easy/quick to do.
If you use both, this is an absolute MUST HAVE.
Apple targets Rosetta in new Mac OS X 10.4.8 buildsSource: Apple Insider
Apple Computer this past weekend released to its developers the second external builds of Mac OS X 10.4.8 Update, a stability and performance upgrade to its Mac OS X 10.4 Tiger operating system.
.Mac's Slow DeathSource: The Unofficial Apple Weblog (TUAW)
An in-depth look at how .Mac is slowly losing ground among Mac users to free services offered by Google and their competitors.
I was initially lured in by the convenience of iDisk, the mac.com email address and so on.
Mozilla Lightning project releases 0.1Source: mozilla.org
Mozilla Lightning is a project to redesign and tightly integrate the Calendar component (which shares its codebase with Mozilla Sunbird) into Mozilla Thunderbird. Available for Windows, Linux, and Mac.
Apple Special Event on Feb 28Source: Apple Insider
The rumours were true, Apple will be holding a special event in Cupertino on February 28. The invitations show an iCal icon displaying the appropriate date and the message, "Come see some fun new products from Apple".
high priority- my favorite new little appSource: kudurshian.net
A great little app that puts your iCal To Do items in the Menu Bar. This guy can write a Coco App. It has a drag and drop install process, it incorporates into system preferences with loads of options, and takes up very little system resources.
A must have for iCal users.