This fall your iOS 5 device will be able to remind you what to do with the new Reminders app. You can even set up a geofence so your phone can remind you something when you're leaving a place (like Pick up Flowers!) or arriving somewhere. This is very handy for forgetful people who are always in a rush. You can view reminders by date, and everything syncs with iCloud so all your iOS devices will stay up to date.