Today is a nice little application, it reminds me of the desktop tool in the latest Microsoft office but done in a better way. You have a window on your Mac’s desktop that shows you todays appointments and tasks from the iCal data store. And with a couple of clicks you can add/remove/edit and view other days events. Personally I’ve gotten used to using OmniFocus for tasks and do not use iCal enough to really need a daily view, however I think Today fits right in the slot that most people would find useful. If you use multiple screens for example you could just have it hanging off that 2nd monitor, always in sight yet out of the way and no need to have iCal taking up desktop space.
There is a great screencast on the site to demonstration the application and at $15 the price is right too in my opinion.