If there is one application Apple has released in the last few years that I should be using more, it is iCal. There are lots of little tricks and cool stuff you can do with iCal…like my favorite:
In a terminal window type:
cat /usr/share/calendar/calendar.history | grep McDonald and look at the goodies. Yes, I was a big fan of hunting for Easter Eggs as the new versions of pre-OS X cam out. Now I am too busy. (Sad)
Anyway, for cool tricks and some good tips, general calendars, and iCal support, check out: http://www.icalworld.com/.