One thing that might come as a delight to our users is that it is now easier to properly add Google Calendar to iCal (i.e. as CalDAV). As you might remember, this used to be pretty cumbersome in earlier versions of iCal, but that's no longer the case.
To add your Google Calendar to iCal, simply got to Preferences -> Accounts.
Then click the plus and enter your Gmail/Google Apps email address.
Just click 'Create' and your account should automatically be added to iCal. It's as simple as that. Now your Google Calendars should be available in Blotter too!
If you're using shared/delegate calendars, please read this post.