You can now share your Google Calendar with your friends, coworkers or family. Create a page that displays the calendar, the same way you see it on Google Calendar. Click on the arrow next to the calendar you want to embed, select "Calendar settings", and select the code from the "embed this calendar" section.
For example, this is Perl Community's calendar displayed in agenda mode:
Mobile Google Calendar
Synchronize Google Calendar with your phone
Synchronize Google Calendar with Outlook