iPhone / iPod Touch Application Questions

[dalthauser]

If you have an iPhone or Touch........

Calendar Application

The application that comes with the Touch is great; however, the earliest reminder is 2 days which isn't enough time for planning in some cases (or mailing a gift to another state/country). Does anyone know of a calendar/reminder application like the calendar app but with more options for reminders?
What are your favorite applications on your unit?
So far mine is Ambiance, but I'm getting a lot of use out of Lose it!, Notes.
I may have to de-select the Scrabble game I bought - too distracting! :-)