Whoa, I am pretty confused. Either everyone else misunderstood your question or I did. While I am all for discussing the pros and cons of various AJAX-toting calendars, I am a die-hard Google (fanfare) fanboy and would rather answer the question at hand - namely, which public calendars are cool.
While this is unquestionably a matter of personal taste, there are some that I wouldn't be able to live without. There are also a lot of sites which round up calendars and can help you out. For example, give http://icalshare.com/top.php a shot.
As for mine, I'm running:
To install any of these, copy the link, click on "manage calendars" in the toolbar, hit "calendars", select "add calendar", select the "public calendar address" tab and paste it there. Then hit OK. Enjoy.
