My old phone had a calendar app that you could set the reminder BEFORE the event (i.e. 5', 10', etc) and then it would keep reminding you every 5 minutes AFTER the event until you picked up the phone and checked it. To me that kind of reminder is very useful since you could have the phone in another area and not hear the initial reminder. You pick up the phone an hour later and the reminder is still there, physically on the screen and beeping. You can't miss it. My new phone (Mytouch) will only remind you BEFORE the event. If I miss the reminder, I am out of luck. It doesn't beep anymore. It does nothing else. It will stay on the screen, but that's it. But then you have to physically check the phone all the time. I'm looking for a reminder that will keep beeping (5' or so) to tell me that there is something there. i.e. Calendar, email, etc.