Is there any application out there for integrating the iPhone's calendar or some similar with a to do list application? Sometimes I have a list of things I have to do so I like to easily formulate them into a schedule. Any ideas??? The way I've been doing it is just entering all my to-dos into a calendar day and then when I am making up a schedule I jusy modify the dates, but it's kind of annoying having it cluttered with stuff you aren't doing that day. I don't like having to re-type things from my separate to-do list app since it just wastes my time...proly faster w/paper and pen that way.