Google Calendar Sync options - Getting better.

Google has finally released support for syncing to your desktop calendar. This could be a very cool tool for keeping multiple calendars on multiple computers synced. Unfortunately, they don't yet support syncing multiple calendars on multiple computers, which for me greatly limits the usefulness of this. But if you're stuck using Outlook, it could be a start, and if they add support for multiple calendars, it could be killer.

The Google Blog post on it.

I have a Google calendar for personal stuff, and several for work. I like to share those with teammates, without them seeing what I'm doing on the weekend. I even keep a few personal ones to keep organized.

It is possible to sync multiple calendars using Thunderbird/Lighting/extensions.
I used this tutorial to set up my Laptop (Windows XP), my desktop (Ubuntu Linux) and they stay sync'd perfectly. Using a different system to sync my smartphone means all three platforms stay perfectly sync'd. I love adding an event on my laptop, and having it appear on my phone.