May I suggest an alarm/reminder function.

Why? DT is a knowledge base.

  1. You can use iCal for alarms.
  2. Here is a nice article on remind
  3. And the Dashboard widget for remind

Yes and I also have mail, a finder, address book etc. I might like to attach a reminder/alarm to a note or a set of to-do’s since there is now the sheets function or even a group that I have setup for projects.