Wasabi is another in a crowded market of "to do" apps, aiming to keep your to do lists handy across iPhone, iPod touch and iPad. There are a number of novel twists keeping Wasabi worth a look for your listmaking needs. The most unique feature are text files which become quicklists, a preset selection of list items which you could use to quickly template a project outline. You can also share tasks with others.
Although iOS 5 will have location-based notes and reminders, Wasabi has them now, with the ability to "pin" tasks to a location and have reminders trigger when you are at a location. If you can't wait for iOS 5 or find the upcoming Apple solution too limited, Wasabi is worth a look. Check it out in the video below.