Calendar example. You can click on event and see this in GE or GMaps. 

You can add New calendar to your Calendars.
Now this calendar have 2 events. You can see events in GMaps by click and select in Where link Map
You can see this calendar as HTML or XML
You can see and use this with Feedburner
Google Embeddable Calendar also see in my blog 
You can copy this link and insert into your page or blog. 
See also Google documentation:
What's new with Google Calendar
Share your events with an individual, a group, or the whole world

GEC forum